Prof. Bishnupada Roy has more than 38 years of research experience in the field of parasitology involving taxonomy and chemotherapy of helminth parasites. He has contributed extensively in the field of molecular diagnosis by developing species specific primers and DNA barcodes for several helminth parasites. He also established anthelmintic potential of several medicinal plants consumed by different tribes in North-East India to cure helminth infections. At present his group is trying to unveil the mechanism of action of the isolated active compounds of these plants and also to evaluate their toxic effect, if any, on the consumers in Northeast India.

Awards:

• Senior Research Fellow, Council of Scientific & Industrial Research, New Delhi (1989-1990)
• Research Associate, Council of Scientific & Industrial Research, New Delhi (1992-1993).

PhD Awarded/Supervised:

Administrative responsibilities:

• Head, Department of Zoology, NEHU (24-11-2021 to 19-12-2023)
• Chairman, Board of Studies in Zoology (24-11-2021 to 19-12-2023)
• Member Secretary, Institutional Ethics Committee, NEHU (24-11-2021 to 19-12-2023)
• Member, Board of Studies in Zoology (2006 to till date)
• Member, University Court, NEHU (23-12-2011 to till date)
• Member, Academic Council, NEHU (23-12-2011 to till date)
• Member, School Board of Life Sciences, NEHU (23-12-2011 to till date)
• Member, Board of Studies in Zoology, NEHU (June 2006 to till date)
• Member, Board of Studies in Biotechnology, NEHU (3 years)
• Member, Board of Studies in Chemistry, NEHU (3 Years)

Academic affiliations: North-Eastern Hill University

Papers presented  in Conferences/Seminars:

Presented more than 20 research papers in National and International Conferences

Collaboration:

• Prof. S. P. Sinhababu, Department of Zoology, Visva-Bharati University, W. Bengal  
• Prof. P. K.  Kar, Department of Zoology, Cooch Behar Panchanan Barma University, W. Bengal
• Prof. Ghanashyam Bez, Department of Chemistry, NEHU

Membership of Academic Societies:

• Elected as Fellow of the Royal Microscopical Society, Oxford (1991)
• Life Member, National Academy of Sciences, Allahabad, India
• Life Member, Indian Science Congress Association, Kolkata
• Life Member, Indian Society of Parasitology, Lucknow
• Life Member, Electron Microscope Society of India
• Life member, Zoological Society, Kolkata

Research Projects

1. Studies on the pharmacological properties of Lysimachia ramosa and its active component(s).  UGC, New   Delhi
2. Cyto-toxic potential of α-viniferin, a natural polyphenolic compound, in  Swiss albino mice. DST, New  Delhi
3. Molecular characterization of zoonoses of worm origin prevailing in  Northeast India. ICMR, New Delhi
4. Status of Amphistomiasis & Molecular Taxonomy of Amphistome Parasites (Platyhelminthes: Trematoda) in   Mammalian Livestock in Northeast India. DBT, New Delhi
5. Anthelmintic activity of some traditional medicinal plants in Mizoram, GBPIHED, Almora
6. On the efficacy and mode of action of some traditional medicinal plants against helminth  parasite, UGC, New Delhi

Publications

Publication and citation:

Books

1. Tandon, V., Yadav, A. K. & Roy B. (2009) : “CURRENT TRENDS IN PARASITOLOGY” Proceedings of the 20th National Congress of Parasitology, Shillong, India (November 3-5, 2008) Panima Publishing Corporation, New Delhi.
2. Tandon, V. & Roy B. (2002) : “SEM  PICTORIAL GUIDE  TO  TREMATODES  OF LIVE  STOCK  IN INDIA” Regency Publication, New Delhi,

Chapters in Books

1. Tandon, V., Roy, B., Shylla, J. A. & Ghatani, S. (2019): “AMPHISTOMES” in “Digenetic  Trematodes (Advances  in Experimental Medicine and Biology)” Rafael T and Fried, B (Eds.),  Springer Science+Business Media,  N. York, DOI 10.1007/978-3-030-18616-6, 225-277.  
2. Roy, B. & Giri, B. R. (2016):      CAREX BACCANS NEES, AN ANTHELMINTIC MEDICINAL PLANT IN NORTHEAST INDIA"  In   "Medicinal Plants and Its Therapeutic Uses" Birla K. Singh (Ed.), OMICS Group  eBook, CA, USA, 1-22.
3. Tandon,V., Roy, B. & Ghatani, S. (2013): “TREMATODE INFECTIONS OF THE GASTROINTESTINAL SYSTEM” In “Infections of the Gastrointestinal  System”. Vaishnavi (Ed.),  Jaypee Brothers Medical Publishers, New Delhi,  426-449.
4. Tandon, V., Roy B. & Prasad, P.K. (2012):   “FASCIOLOPSIS ” in “Molecular Detection of Human    Parasitic Pathogens”. D. Liu (Ed.), CRC Press, Florida, USA, 351-362.
5. Tandon, V., Yadav, A.K., Roy, B. & Das, B. (2011): “PHYTOCHEMICALS AS CURE OF WORM    INFECTIONS IN TRADITIONAL MEDICINE SYSTEMS” in “Emerging  Trends in Zoology”  Srivastava  & Kumar (Eds.), Narendra  Publishers, New Delhi,  1-27.
6. Roy, B. & Tandon, V. (2003):   “FASCIOLOPSIS  BUSKI” in “International Hand Book of Foodborne  Pathogens”. M.D. Miliotis and J. W. Bier (Eds.), Marcel Decker, Inc. Washington, 563-570.
7. Roy, B. (2000):    “STRAIN  VARIATION IN HELMINTH  PARASITES  & PAGE” in  “Identification   and   Diagnosis  of   Parasites   of   Biomedical Importance”. A. K. Yadav (Ed.),   83-86.                                         

List of research publications

1. Nagi, K., Roy, B. & Yadav, A. K. (2024). Anthelmintic efficacy of Solanum spirale on fowl tapeworm, Raillietina echinobothrida. Proceeding of the Zoological Society, https://doi.org/10.1007/s12595-024-00521-9
2. Lyngdoh, D., Sharma, S., Roy, B., Tandon, V. and Zas, P. (2024). Secondary Structure Analysis of Fasciola from Semi-wild Ruminants of Northeast India. Acta Parasitologica, 69(1), 599-608.
3. Das, A., Yadav, A. K. & Roy B. (2023). Safety Evaluation of a Traditional Medicinal Plant, Flemingia vestita Benth and Hooker in Swiss Albino Mice: An Acute and Sub acute Toxicity Study. Toxicology International. 30(3), 297-308. DOI:10.18311/ti/2023/v30i3/32175
4. Dev, D., Sarkar, A., Malakar, K & Roy, B. (2023). A pre clinical study on wound healing property of Calamus floribundus (Griff.) leaves using mice excision model. International journal of pharmaceutical sciences and drug research. 15(3), 268-276. 
5. Roy, S & Roy B. (2023). Studies on toxicity and peptic ulcer healing potential of crude extract of Osbeckia crinita in Swiss albino mice. Jordan Journal of Biological Sciences. 16(4) https://doi.org/10,54319/ijbs/160405.
6. Dev, D., Sarkar, A., & Roy, B. (2023). Evaluation of In Vivo Wound Healing Potential of Schima wallichii (Korth.) Choisy. Indian Journal of Pharmaceutical Sciences, 85(1), 199-206. 
7. Nagi, K., Roy, B. & Yadav, A.K. (2023). In vitro cestocidal activity of Persicaria hydropiper (L.) Delarbre, a traditionally used anthelmintic plant in India. Journal of Parasitic Diseases. 47, 198–202. https://doi.org/10.1007/s12639-022-01559-2
8. Dev, D., Sarkar, A., & Roy, B. (2022). Acanthus leucostachyus leaf extracts promote excision wound healing in mice. Asian Pacific Journal of Tropical Biomedicine, 12(11), 475. https://www.apjtb.org/text.asp?2022/12/11/475/360563
9. Sarkar, A., & Roy, B. (2022). Biochemical and Ultrastructural Studies for Toxicity of Kaempferol Derivative Recovered from the Plant Lysimachia ramosa. Defence Life Science Journal, 7(3), 147-155.
10. Sarkar, A., & Roy, B. (2022).Reproductive Toxicity in Male Wistar Rats Caused by Kaempferol Derivative Isolated from Lysimachia ramosa. Journal of Scientific Research 66(1):142-147. https://dx.doi.org/10.37398/JSR.2022.660115. 
11. Shylla, A., Pathaw, D., & Roy, B. (2022). Toxicological Assessment of Methanolic Fruit Extract of Zanthoxylum acanthopodium DC. in Swiss Albino Mice: Acute and Sub-acute Toxicity Study. Toxicology International, 29(1),75-93. https://doi.org/10.18311/ti/2022/v29i1/28051.
12. Dey, P., Roy, B. & Mahanto, R. (2021). A kaempferol derivative isolated from Lysimachia ramosa (Wall ex. Duby) induced alteration of acetylcholinesterase and nitric oxide synthase in Raillietina echinobothrida. Veterinary Parasitology, https://doi.org/10.1016/j.vetpar.2021.109461.
13. Pathaw, D., Shylla, A & Roy. B. (2021). Safety evaluation of Carex baccans Nees. (a traditional anthelmintic remedy) in Swiss albino mice : An acute and sub-acute toxicity study. Toxicology International. 28(2): 115-125.
14. Dey, P. & Roy, B. (2020). Effect of Lysimachia ramosa Wall. Ex Duby and its n-butanol  fraction on glycogen content and some energy related enzymes in the cestode, Raillietina echinobothrida. Proceedings of  The Zoological Society. 73: 255-264.
15.  Zimik, P., Sharma, S. & Roy, B. (2019). Characterization of Clinostomum metacercariae using microscopic and molecular approaches. Anals of Parasitology. 65(1): 87-97.
16. Dev, D. & Roy, B. (2019). Wound-healing potential of roots of  Hygrophila auriculata Schumach. in Swiss albino mice. Applied Clinical Pharmacology and Toxicology. DOI: 10.29011/ACPT-117.100017.
17. Ronghang B., Zimik, P. & Roy, B. (2018). Stereoscan and molecular characterization of rumen flukes of Mithun (Bos frontalis, Lambart 1804) from Arunachal Peadesh, India. NBU Journal of Animal Science.  12: 1-10.
18. Dey, P. & Roy, B. (2018). Biochemical and ultrastructural changes in Raillietina echinobothrida in vitro exposed to extract of Lysimachia ramosa. Journal of Parasitic Disease. 42(2): 212-219.
19. Roy, B & Pathaw, D. (2018). Cytotoxic effects of the phytochemical (+)-α-viniferin in Swiss albino mice. British Journal of Pharmaceutical and Medical Research. 3(5): 1340-1351.
20. Bharti R. R. & Roy, B. (2017). In vivo acute toxicity of a traditionally used medicinal plant Millettia pachycarpa Benth. in Swiss albino mice. NBU Journal of Animal Science. 11: 15-20.
21. Roy, B & Pathaw, D. (2017). Flowcytometric analysis of cell cycle in the liver of mice in vivo exposed to (+)-α-viniferin, a phytostilbene. Journal of Clinical and Experimental Pharmacology. DOI: 10.4172/2161-1459.1000243.
22. Philayung Z.A.S. & Roy B. (2017). Scanning electron microscopy of nematode parasites infecting climbing perch with redescription of Paraquimperia manipurensis. Imperial Journal of Interdisciplinary Research. 3(6): 994-1002.
23. Koiri,  R.  & Roy, B. (2017). The occurrence of a new piscine tape worm Senga Dollfus, 1934 (Pseudophyllidea: Bothriocephalidae) in Monopterus cuchia (F. Hamilton, 1822) from Tripura. Imperial Journal of Interdisciplinary Research. 3(2): 864-870. 
24. Koiri,  R.  & Roy, B. (2017).  Redescription and new locality record of some helminth parasites   of Clarias batrachus in Tripura, India.  International Journal of Research in BioSciences. 6(1):26-41.
25. Koiri, R. & Roy, B. (2017). Spectrum of helminth parasites infecting some edible fishes of      Tripura. Imperial Journal of Interdisciplinary Research. 3(1): 974-978.
26. Koiri,  R.  & Roy, B. (2016).  The seasonal incidence of parasitic helminth infection among the  walking catfish, Clarias batrachus of Tripura, India. Annals of Parasitology. 62(4): 307-314.
27. Roy, B. & Dey, P. (2016). Cytotoxic effects of Lysimachia ramosa Wall. Ex Duby (Primulaceae) in   Swiss albino mice. Journal of Pharmacognosy & Natural Products. DOI: 10.4172/2472-0992.1000126.
28. Lyngdoh, D. Sharma, S., Roy, B. & Tandon, V. (2016). Animal Fascioliasis: Perspectives from high  altitudinal regions. Veterinary Parasitology.  232: 21-31.
29. Sharma, S. Lyngdoh, D., Roy, B. & Tandon, V. (2016). Molecular Phylogeny of Cyclophyllidea (Cestoda:Eucestoda): An in-silico analysis based on mtCOI gene. Parasitology Research. DOI 10.1007/s00436-016-5092-4. 
30. Sharma, S. Lyngdoh, D., Roy, B. & Tandon, V. (2016). Differential diagnosis and molecular characterization of Hymenolepis nana and Hymenolepis diminuta (Cestoda: Cyclophyllidea: Hymenolepididae) based on nuclear rDNA ITS2 gene marker. Parasitology Research DOI 10.1007/s00436-016-5210-3. 
31. Ronghang B. & Roy, B. (2016). Status of Tick infections among semi-wild cattle in Arunachal Pradesh, India. Annals of Parasitology. 62(2): 131-138.
32. Giri, B. R. & Roy, B. (2016). Praziquantel induced oxidative stress and apoptosis-like cell death in Raillietina echinobothrida. Acta Tropica. 159: 50-57.
33. Giri, B. R. & Roy, B. (2016). Cysticercus fasciolaris infection induced oxidative stress and apoptosis in rat liver: a strategy for host parasite cross talk. Parasitology Research. DOI: 10.1007/s00436-016-5008-3
34. Roy, B. & Giri, B. R. (2016). Fumarate reductase inhibitory potential of phytostilbenes, resveratrol and α-viniferin. International Journal of Pharma and Bio Sciences. 7(2): 134-137.
35. Roy, B & Giri, B. R. (2016). α-Viniferin and resveratrol induced alteration in the activities of some  energy metabolism related enzymes in the cestode parasite Raillietina echinobothrida, Acta Tropica. 154: 102-106.
36. Sahu, R., Biswal, D. K., Roy, B. & Tandon, V. (2015). Molecular characterization of Opisthorchis noverca (Digenea : Opisthorchiidae) based on nuclear ribosomal ITS2 and mitochondrial COI genes. Journal of Helminthology. DOI:http://dx.doi.org/10.1017/S0022149x15000851.
37. Swargiary A. & Roy, B. (2015). In vitro anthelmintic efficacy of Alpinia nigra and its bioactive compound, astragalin against Fasciolopsis buski. International Journal of Pharmacy and Pharmaceutical Sciences. 7(10): 30-35.
38. Giri, B. R. & Roy, B. (2015). Resveratrol and α-viniferin induced alterations of acetylcholinesterase and nitric oxide synthase in Raillietina echinobothrida.  Parasitology Research. 114(10): 3775-3781.
39. Giri, B. R. & Roy, B. (2015). Apoptosis like cell death in Raillietina echinobothrida induced by   resveratrol. Research in Veterinary Science. 101: 120-125.
40. Swargiary A. & Roy, B. (2015). Phytochemical screening and antioxidant property of shoot extracts of Alpinia nigra (Gaertn.) Burtt (Family – Zingiberaceae). Medicinal Plants. 7(1): 48-50.
41. Roy, B. and Giri, B.R. 2015. α-Viniferin induced structural and functional alterations in Raillietina echinobothrida, a poultry tapeworm. Microscopy and Microanalysis.  21:  377-384.
42. Giri, B.R., Bharti, R.R. and Roy, B. 2015. In vivo anthelmintic activity of Carex baccans and its active principle resveratrol against Hymenolepis diminuta. Parasitology Research. 114(2): 785-788.
43. Ronghang, B. and Roy, B. (2014) Scanning electron microscopic observations on sensilla of Ixodes   acutitarsus recovered from semi-wild cattle Bos frontalis Lambert. Entomology and Applied Science Letters. 1(4):8-15.
44. Ronghang, B. & Roy, B. (2014). Stereoscan Observations on Sensilla of Rhipicephalus anguineus Recovered from Semi-Wild Cattle Bos frontalis Lambert. Journal of Advance Microscopy Research. 9: 136-140.
45. Chetia, M., Giri, B. R., Swargiary, B., Ronghang, B. & Roy, B. (2014). Amomum maximum Roxb (Zingiberaceae), a Medcinal Plant of Tripura, India: A natural Anthelmintic?. Journal of Advance Microscopy Research. 9: 148-153.
46. Ghatani, S. Shylla, J. A., Roy, B. & Tandon, V. (2014). Multilocus sequence evaluation for differentiating species of the trematode Family Gastrothylacidae, with a note on the utility of mitochondrial COI motifs in species identification. Gene. 548: 277-248.
47. Ronghang, B. & Roy, B. (2014). Occurrence of Rhipicephalus sanguineus and Ixodes acutitarsus (Acari: Ixodidae) among semi-wild cattle Bos frontalis in Northeast India. Entomology and Applied Science Letters. 1(3): 23-26.
48. Giri, B. R. & Roy, B. (2014). Resveratrol induced structural and biochemical alterations in the tegument  of Raillietina echinobothrida.  Parasitology International. 63: 432-437.
49. Ronghang, B. & Roy, B. (2013). Filarial infections in semi-wild cattle of Northeast India: first record of Seteria digitata (von Linstov 1906) in Bos frontalis (Lambert 1804). Journal of Parasitic Diseases. DOI 10.1007/s12639-013-0404-4.
50. Roy, B. & Giri, B. K. (2013). Anti-acetylcholinesterase activity of root hair of Carex baccans on the trematode Artyfechinostomum sufrartyfex.  NBU Journal of Animal Sciences. 7: 1-5.
51. Giri, B. R. & Roy, B. (2013). Nephrotoxic potential of Carex baccans (Family: Cyperaceae): a light and electron microscopic studies, The Journal of Toxicology and Health. 103: 244-251.
52. Dasgupta, S., Roy, B. & Giri, B. R. (2013). Ultrastructural observations on Raillietina echinobothrida exposed to crude extract and active compound of Sercurinega virosa. Micron.  50: 62-67.
53. Giri, B. R. & Roy B. (2013). Evidnece of apoptosis in Raillietina echinobothrida induced by methanolic extract of three traditional medicinal plants of Northeast India. Experimental Parasitology.  134: 466-473.
54. Swargiary, A., Roy, B. Giri, B. R. &  Ronghang, B. (2013). A comparative study on the anthelmintic efficacy of some medicinal plants of North-East India: alteration in the glycolytic enzymes  of Fasciolopsis buski, a giant intestinal fluke. Asian Pacific Journal of Tropical Medicine.  412-420.
55. Dasgupta, S., Roy, B., Venkataswamy, M. & Giri, B. R. (2013). Effects of Acacia oxyphylla and Securinega virosa on functional characteristics of Raillietina echinobothrida (Phylum: Platyhelminthes; Class: Cestodea), a poultry cestode parasite. Journal of Parasitic Diseases. 37(1): 125-130.
56. Swargiary, A., Roy, B. & Ronghang, B. (2013). Partial characterization of alkaline phosphatase in Fasciolopsis buski – an intestinal fluke treated with crude extract of Alpinia nigra (Zingiberaceae). Pharmaceutical Technology & Drug Research. doi:10.7243/2050-120X-2-5.
57. Singh, M., Roy, B., Tandon, V. & Chaturvedi, R. (2013). Extracts of differentiated cultures of Spilenthes acmella Murr. Possess antioxidant and anthelmintic properties and hold promise as an alternative source of herbal medicine. Plant Biosystems, 148: 259-267.
58. Roy, B., Giri, B. R., Chetia, M & Swargiary, A. (2012). Ultrastructural and biochemical alterations in rats exposed to crude extract of Carex baccans and Potentilla fulgens, Microscopy and Microanalysis. 18:  1067-1076.
59. Roy, B., Swargiary, A. & Giri, B. R. (2012). Alpinia nigra (Family Zingiberaceae): An Anthelmintic          Medicinal Plant of North-East India. Advances in Life Sciences.  2(3): 39-51.
60. Challam,  M.,  Roy,  B.   &   Tandon, V.  (2012).  In  vitro   anthelmintic   efficacy  of   Carex   baccans  (Cyperaceae):   ultrastructural,  histochemical  and  biochemical  alterations  in  the cestode,  Raillietina   echinobothrida. Journal of Parasitic Diseases.  31: 81-86.
61. Roy, B.,  Dasgupta, S.,  Manivel, V.,  Parameswaran, P.S. &  Giri, B.R. (2012). Surface topographical  and  ultrastructural alterations of Raillietina echinobothrida and Ascaridia galli induced by a compound   isolated from Acacia oxyphylla. Veterinary Parasitology. 185: 322-326.
62. Swargiary A. and Roy, B. (2011). Kinetics of Acetylcholinesterase inhibition in Fasciolopsis buski and          Raillietina echinobothrida by shoot extract of Alpinia nigra,an indigenous medicinal plants. Plant  Medicine.  3(2): 145-150.
63. Ghatani, S., Shylla J. A., Tandon, V., Chatterjee, A & Roy, B. (2011). Molecular characterization of  pouched amphistome parasites (Trematoda:Gastrothylacedae) using ribosomal ITS2 sequence and  secondary structures. Journal of Helminthology. DOI:10.1017/S0022149X11000125. 1-8.
64. Roy, B., Dasgupta, S. & Giri, B.R. (2012).  Electron microscopic observations of tegumental surface of Raillietina echinobothrida treated with root-peel extract of Potentilla fulgens. Microscopy Research and Technique. 75: 1000-1005.
65. Roy, B., Swargiary, A., Syiem, D & Tandon, V. (2010). Potentilla fulgens (Family Rosaceae), a medicinal plant of north-east India: a natural anthelmintic? Journal of Parasitic Diseases. 34(2): 83-88.
66. Dasgupta, S and Roy, B. (2010). Antiparasitic activity of methanolic extract of Acacia oxyphylla (Leguminosae) against Raillietina echinobothrida. Journal of Parasitic Diseases. 34(1): 14-19.
67. Challam,  M.,  Roy, B.   &  Tandon, V. (2010).    Effect  of   Lysimachia  ramosa   (Primulaceae)    on helminth parasites: Motility, mortality and scanning electron microscopic observations  
    on surface topography. Veterinary Parasitology. 214: 214-218.
68. Dasgupta, S., Roy, B. & Tandon, V. (2010). Ultrastructural alterations of the tegument of                   Raillietina   echinobothrida treated with the stem bark of Acacia oxyphylla (Leguminosae). Journal of Ethnopharmacology. 172(2): 568-571.
69. Roy, B. and Swargiary, A. (2009). Anthelmintic efficacy of ethanolic shoot extract of Alpinia  nigra on tegumental enzymes of Fasciolopsis buski, a giant intestinal parasite. Journal of Parasitic Diseases.  33(1&2): 48-53.
70. Roy, B., Dasgupta, S. & Tandon, V. (2009).  Ultrastructural  observations  on  Fasciolopsis buski and  its  alterations  caused  by  shoot  extract  of  Alpinia  nigra.  Microscopy  Research   and   Technique. 72(2): 61-66.
71. Lalchhandama, K., Roy, B. & Dutta, B. K. (2009). Anthelmintic activity of Acacia oxyphylla stem  bark against Ascaridia galli . Pharmaceutical Biology. 47(7): 578-583.
72. Roy, B., Dasgupta, S.  & Tandon, V. (2008). Ultrastructural  observations  on  tegumental  surface  of   Raillietina  echinobothrida  and  its  alterations  caused  by root-peel extract of Millettia pachycarpa.  Microscopy Research and Technique.  71(11): 810-815.
73. Roy, B., K. Lalchhandama & Dutta, B. K. (2008). Scanning electron microscopic  observations on the     in vitro anthelmintic effects of Millettia pachycarpa on  Raillietina echinobothrida. Pharmacognosy   Magazine. 4: 20-25.
74. Lalchhandama, K., Roy, B. & Dutta, B. K. (2008). Effects of Millettia pachycarpa on the trace metals   and tegumental enzymes of Raillietina   echinobothrida.  Pharmacognosy  Magazine. 4(16):  254-268.
75. Roy, B.,  K. Lalchhandama  &   Dutta, B. K. (2007):   Anticestodal  efficacy  of  Acacia  oxyphylla  on     Raillietina echinobothrida: A light and electron microscopic studies. Pharmacologyonline. 1: 279-287.
76. Lalchhandama, K., Roy, B. & Dutta, B. K. (2007). In vitro  anthelmintic  activity of Acacia  oxyphylla:  changes in  the   levels  of trace  elements  and  activities  of  the  tegumental  enzymes of the  cestode,   Raillietina echinobothrida. Pharmacologyonline. 2: 307-317.
77. Tandon, V.  &  Roy, B. (2005).  Status  of  helminthiasis  in  livestock of Northeast India. Proceeding,   National Academy of Science India. 75(B): 229-244
78. Roy, B. & Dey, S. (2004). Scanning electron microscopic detection of  the possible ultrasonic receptor   in Chironomous samoensis.  Journal of Nature Conservation. 16(2): 333-336.
79. Roy, B. (2003).  Anthelmintic  activity  of Artemesia meritima against Artyfechinostomum sufrartyfex,   a zoonotic parasite in North-East India.  Revista di Parasitologia.  20: 143-148.
80. Roy, B. & Dutta, B. K. (2003). In vitro lethal efficacy of leaf extract of Cannabis sativa on the larvae of  Chironomous  samoensis.  Indian  Journal  of   Experimental   Biology.  41:  1338-1341.
81. Roy, B., Khathing, D.T., Gupta, S. & Dkhar, P.S. (2003).  Effect  of  paper  mill  wastes on blood of   Channa punctatus.  Journal of Nature Conservation. 15(1) :6-14.
82. Roy, B., Dey, S. & Alfred, J. R. B.(2003). Stereoscan observations on the morphology and distribution pattern of leg sensilla in Chironomous samoensis Edwards : A comparative study of male and female. Journal of Nature Conservation.  15(1) 259-279.
83. Roy, B. & Gupta, S. (2002).  Impact of paper mill waste on  Channa punctatus. Journal of Industrial  Pollution Control. 18(2): 231-235.
84. Roy, B. (2001). Stereoscan  observation  on the surface alteration of  Orthocoelium dinniki  induced  by   extract of Spilenthes oleracea L.  Revista di Parasitologia. 18 : 9-14.
85. Ramanujam, S.N., Roy, B. & Jha, L.K. (2000). Inventory   studies  on  the  earthworm  population  in the Agroforesty system of Mizoram. Proceeding, Internatonal Workshop on Agroforestry and Forest Product. 191-194.
86. Roy, B.   &  Khathing, D. T. (1999).  Quality  of  surface   water  and  its  possible  impact  on  public     health    in Shillong, India.  Health and Hygiene. 20 : 59-64.
87. Imkongwapang, R., Tandon, V. & Roy, B. (1999). Surface fine topography of Diplodiscus sp. (Trematoda : Paramphistomidae) parasitic in anuran frogs.  Journal of Parasitology and Animal Biology.  8(1) : 55-62.
88. Roy, B. & Tandon, V. (1999). Fluckicidal activity of Alpinia nigra (Zingiberaceae) agaist the trematode Fasciolopsis buski.  Biomedical Letter.  60 : 23-29.
89. Roy, B. & Phanwar, I. (1997). Scanning electron microscopic observations on antennae and body  surface of body louse Pediculus humanus humanus L. “Revista di Parasitologica.  14(1) : 159-163.
90. Tandon, V., Pal, P., Roy, B., Rao, H.S.P. & Reddy, K.S. (1997). In vitro anthelmintic activity of root tuber extract of Flemingia vestita, an indigenous plant in Shillong, India. Parasitology Research. 83 : 492-498.
91. Roy, B. & Tandon, V. (1997). In vitro fluckicidal effect of leaf extract of Cannabis sativa Linn. On the trematode Fasciolopsis buski.  Indian Journal of Experimental Biology. 35: 80-82.   
92. Roy, B. (1996). Stereoscan observations on sensilla and other cuticular structures of Ctenocephalus canis (Curtis, 1826).  Revista di Parasitologia. 13(3) : 313-323.
93. Roy, B. & Tandon, V. (1996). Effect  of root  tuber extract of Flemingia vestita, a leguminous plant,   on Artyfechinostomum sufrartyfex and Fasciolopsis buski : a scanning electron microscopy study.  Parasitology Research.  82 : 248-252.
94. Roy, B. &  Tandon, V. (1996). Occurrence of Orthocoelium dinniki Eduardo, 1985 and Orthocoelium parvipapillatum (Stile & Goldberger, 1910) Eduardo, 1985 among Bos indicus and Ovis aries in India. Journal of Bengal Natural History Society. 15(2) : 49-50.  
95. Tandon, V. & Roy, B. (1996). Stereoscan observation on the tegumental surface of Catatropis indicus.  Srivastava, 1935.  Acta parasitologica. 41(3) : 115-119.  
96. Roy, B.  & Tandon, V. (1995).  Calicophoron  shillongensis sp.  (Trematoda,  Paramphistomidae), a new parasite from the goat (Capra hircus L.) in India.  Acta Parasitologica. 40(4) : 193-197. 
97. Tandon, V. & Roy, B. (1994). Analysis of trace elements of some edible trematodes parasitizing the bovine  hosts.  Current Science. 67(6) : 548-549. 
98. Roy, B. & Tandon, V. (1993).  Morphological and microtopographical train variations among Fasciolopsis buski originating from different  geographical areas.  Acta Parasitologica Polonica. 38 (2) : 72-77.  
99. Tandon, V. & Roy, B. (1993).  Surface morphological observations on adult Echinostoma revolutum  (trematoda) using scanning electron microscopy.  Dr. C. B. Srivastava Com. Vol. 63-69.
100. Roy, B., Tandon, V. & Dutta, M. (1992).  Prevalence of protozoan infection among frogs in a humid subtropical montane zone.  Bioved.  3(1) : 1-2.  
101. Roy, B. & Tandon, V. (1992).  Trematodiasis in North-East India : A study on the spectrum of digenetic trematodes among pigs, buffaloes, cattle, goats and sheep.  Indian Journal of Animal Health. 13(1) : 5-14.
102. Roy, B. & Tandon, V. (1992).  Waterborne pathogens in urban areas of Shillong, India. Health and Hygiene.  13 : 165-168.    
103. Roy, B. & Tandon, V. (1992).  Seasonal incidence of   amphistomes in cattle in Meghalaya, India.  Journal of Veterinary Parasitology. 5(2) : 129-131.
104. Roy, B. & Tandon, V. (1992).  Opisthorchis noverca Braun, 1902 : First record from a bovine host and a comparative stereoscan study on the surface topography of the flukes of swine and cattle origin. Acta Parasitologica Polonica.  37(4) : 179-181.  
105. Roy, B. & Tandon, V. (1992).  Scanning  electron   microscopy of adult  Eurytrema   pancreaticum,  a   parasite of human and bovine hosts.  Indian Journal of Parasitology. 16(1) :135-136.
106. Roy, B. & Tandon, V. (1992).  Seasonal prevalence of some   zoonotic infections in   cattle and pigs in a humid sub-tropical montane zone in India.  Veterinary   Parasitology. 41 : 69-76.
107. Roy, B. & Tandon, V. (1992).  Louse infestation in human population in Shillong, India. Health and Hygiene. 13 : 15-20.
108. Roy, B. & Tandon, V. (1992).  Surface fine topography of four paramphistomid trematodes parasitizing sheep.  Revista di Parasitologia. 9(L3) : 107-117.
109. Roy, B. & Tandon, V. (1992).  Surface fine ultrastructural studies of the blood fluke Schistosoma indicum, a parasite of bovine ruminants.  Revista di Parasitologia.  9(L3) : 119-126.
110. Roy, B. & Tandon, V. (1992).  Biochemical characterization of some digenetic trematodes using protein as  parameters.  Journal of Parasitology and Applied Animal Biology, 1(1) : 21-25. 
111. Roy, B. & Tandon, V. (1991).  Prevalence of   hydatidosis in hilly  mountainous region   of  India :  A  study of domesticated intermediate host in Meghalaya (India).   Proceedings of Seminar on Zoonosis,   Regional Medical Research Centre, Dibrugarh,  83-91.
112. Roy, B.  &  Tandon, V. (1991).     Usefulness   of      Tetramethylsilane     in    the     preparation      of  helminthparasites for scanning electron microscopy.  Revista di Parasitologia. 8(L2): 405-413.
113. Roy, B.  &  Tandon, V.  (1990).   On  a  new  trematode  belonging  to  the   genus    Velasquezotrema   Eduardo  at Javellene, 1987 from Tripura India.  Zoologischer  Anzeiger. 224 : 106-112.
114. Roy, B.  &  Tandon, V.  (1990).  Leiperocotyle meghalayensis   (Paramphistomidae : Orthocoeliinae)  a new species from cattle (Bos indicusLennaeus) in India.  Zoologischer Anzeiger.  225 : 63-70.
115. Dey, S., Basubaul, T. S., Roy, B. & Dey, D. (1989).   A   new   rapid  method  of   air   drying using   Tetramethylsilane  for  scanning   electron   microscopy.   Journal   of   Microscopy.   156 :  269-261.  
116. Roy, B. & Tandon, V. (1989).  Metacestodiasis in North-East India : A  study  on  the   prevalence  of   hydatidosis    and   cysticercosis  in   Mizoram,  Nagaland   and   Assam.  Indian  Journal  of  Animal   Health.  28 : 5-10.
117. Roy, B.  &  Tandon, V. (1989).   Stereoscan  studies  on  the  surface   topography  of  Olveria  bosi, parasitic  in rumen of cattle.  Indian Journal of  Paasitlogy. 13 : 299-301.
118. Roy, B. &  Tandon, V. (1989).   Status   of   Bovine  fascioliasis   in  Meghalaya.   Indian    Journal  of  Helminthology.  41 : 136-140.
119. Yadav, A.K..,  Tandon, V.  &  Roy, B. (1989).      Prevalence   of   nematode   parasites  of  livestock animals in some North-East states of India.  Indian Journal of  Helminthology. 141 : 55-60.
120. Roy, B.  &  Tandon, V. (1989).  A survey  of  gastrointestinal   paramphistomes   in   beef   cattle of  some   North-East Indian States.  Indian Journal of Parasitology. 13 : 303- 306.
121. Yadav, A.K.,  Tandon, V.,  &  Roy, B. (1988).  Filarial   infection  in goats of Tripura : Occurrence  of   Seteria cervi  (Ruldophi, 1819, Balyes, 1936).  Indian  Journal   of   Animal   Health.   27 : 179- 180.