1. Sangeetha, K., I. Purushothaman and S. Rajarajan, 2017. Spectral characterisation, antiviral activities, in silico ADMET and molecular docking of the compounds isolated from Tectona grandis to chikungunya virus. Biomed. Pharmacother., 87: 302-310.
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2. Wyson, J.W., M. Deventhiran, P. Saravanan, D. Anand and S. Rajarajan, 2016. Phytochemical analysis of leaf extract of Eclipta prostrate (L.) by GC-MS method. Int. J. Pharm. Sci. Res., 7: 272-278.
3. Shanthi, G., I. Purushothaman and S. Rajarajan, 2016. Phylogenetic analysis of dengue virus serotype 1 isolated from clinically suspected pediatric patients in Chennai, Tamilnadu. Int. J. Adv. Biotechnol. Res., 7: 106-111.
4. Divyadarshini, A., P. Indu, S. Rajarajan and R. Sridhar, 2016. Screening of potential phytochemicals against protease of varicella zoster virus-an in silico approach. World J. Pharm. Pharm. Sci., 5: 679-693.
5. Chidambaram, S. and S. Rajarajan, 2016. In-vitro antimycobacterial activity of selected Indian medicinal plants to resistant strains of Mycobacterium tuberculosis. Int. J. Pharmaceut. Sci. Res., 7: 4130-4133.
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6. Anantha, P.S., M. Deventhiran, P. Saravanan, D. Anand and S. Rajarajan, 2016. A comparative GC-MS analysis of bacterial secondary metabolites of Pseudomonas species. Pharm. Innov., 5: 84-89.
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7. Vani, G.S. and S. Rajarajan, 2015. A study on in-silico analysis of phytochemicals targeting the proteins of Hepatitis B and C viruses. Int. J. Curr. Microbiol. Applied Sci., 4: 683-691.
8. Sangeetha, K. and S. Rajarajan, 2015. In-vitro antiviral activity of Indian medicinal plants to Asian and east central south African lineage of chikungunya virus. Int. J. Pharm. Sci. Res., 6: 692-697.
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9. Arunkumar, J. and S. Rajarajan, 2015. Anti- HSV-2 activity of lyophilized extracts of Terminalia catappa Lin., Mangifera indica Lin. and phytochemical compound mangiferin. Int. J. Med. Pharm. Virol., 2: 22-26.
10. Shanthi, G. and S. Rajarajan, 2014. A study on in vitro< screening of antiviral activity of Lyophilised extracts of three medicinal plants on Dengue 2 & 4 serotypes. Int. J. Recent Scient. Res., 5: 740-744.
11. Shanthi, G. and S. Rajarajan, 2014. A seroprevalence study of dengue virus infection among clinically suspected pediatric patients in Chennai, Tamilnadu. Int. J. Bio-Technol. Res., 4: 29-36.
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12. Shanthi, G. and S Rajarajan, 2014. In vitro screening of antiviral activity of lyophilized extracts of Azhadirachta indica and Quercus lusitanica on dengue 1 & 3 serotypes. Int. J. Curr. Res., 6: 6083-6087.
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13. Roosvelt, P., I. Purushothaman and S. Rajarajan, 2014. Comparative studies of partial sequence analysis of the varicella zoster virus ORF 63 isolated from chickenpox and herpes zoster patients from Chennai, India. Int. J. Adv. Res., 2: 502-513.
14. Roosvelt, P., I. Purushothaman and S. Rajarajan, 2014. Comparative studies of partial sequence analysis of the varicella zoster virus ORF 63 isolated from chickenpox and herpes zoster patients from Chennai, India. Int. J. Adv. Res., 2: 502-513.
15. Kothandan, S. and R. Swaminathan, 2014. Evaluation of in vitro antiviral activity of Vitex negundo L., Hyptis suaveolens (L) poit., Decalepis hamiltonii Wight & Arn., to Chikungunya virus. Asian Pac. J. Trop. Dis., 4: S111-S115.
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16. Hemamalini, V., V. Deepa, G. Shanthi and S. Rajarajan, 2014. Evaluation of antimycotic activity of Phyllanthus emblica Linn on two isolates (Malassezia furfur and Malassezia obtuse) from Dandruff and pityriasos versicolor. Int. J. Biol. Pharm. Res., 5: 763-767.
17. Soundhari, C. and S. Rajarajan, 2013. In vitro screening of lyophilised extracts of Solanum trilobatum and Tectona grandis for antitubercular activity. Int. J. Recent Scient. Res., 4: 1018-1021.
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18. Soundhari, C. and S. Rajarajan, 2013. In vitro screening of lyophilised extracts of Alpinia galangal L. and Oldenlandia umbellate L. for antimycobacterial activity. Int. J. Biol. Pharm. Res., 4: 427-432.
19. Sangeetha, K., S. Madanraj and S. Rajarajan, 2013. Study on the microbiological quality of the packaged sprouts marketed in Chennai, Tamilnadu. Int. J. Recent Scient. Res. .
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20. Rubini, B., G. Shanthi, C. Soundhari and S. Rajarajan, 2013. Antifungal activity of Terminalia chebula and Terminalia catappa on two dermatophytes. Open Access J. Med. Aromatic Plants, 4: 15-19.
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21. Roosvelt, P., I. Purushothaman, K. Sangeetha and S. Rajarajan, 2013. Discovery of a novel binding trench in bmrf1 of epstein barr virus an in silico approach. Int. J. Pharm. Pharm. Sci., 6: 578-584.
22. Roosvelt, P., I. Purushothaman and S. Rajarajan, 2013. Structural bioinformatics-cum-immunoinformatic approaches on the major glycoproteins to screen potential antigenic determinants of varicella zoster virus in vaccine design. Int. J. Adv. Res. Comput. Sci. Software Eng., 3: 1039-1050.
23. Roosvelt, P., I. Purushothaman and S. Rajarajan, 2013. Screening of potential T cell antigenic determinants of Human Herpesvirus-1 (HSV-1): An immunoinformatics study. Int. J. Pharm. Integr. Life Sci., 1: 8-19.
24. Kalaiyarasi, K., K. Sangeetha and S. Rajarajan, 2013. A comparative study on the microbial flora of the fresh sap from cut inflorescence and fermented sap (toddy) of Borrassus flabellifer Linn (Palmyrah tree) and of Cocos nucifera Linn (Coconut tree) to identify the microbial fermenters. Int. J. Res. Pure Applied Microbiol., 3: 43-47.
25. Chidambaram, S. and R. Swaminathan, 2013. Determination of anti-tubercular activity of four Indian medicinal plants against Mycobacterium tuberculosis by broth micro dilution method. Int. J. Pharmaceut. Sci. Res., 4: 3932-3937.
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26. Thyagarajan, S., S. Rajarajan and N. Usman, 2011. A retrospective study on the serological screening of female contacts of HIV/STI in Chennai for herpes simplex virus and co viral infections. Int. J. Med. Pharm. Virol., 1: 14-25.
27. Rajarajan, S., N.K. John and G. Shanthi, 2011. Evaluation of antibacterial activity of whole aqueous extract of ripe and unripe fruit of Noni-an in vitro study. J. Med. Aromatic Plant Sci., 33: 159-164.
28. Rajarajan, S., K. Sangeetha, D. Santhoshkumar, G.S. Kumar, A. Divyadarshni, G. Shanthi and R. Ravanan, 2011. Serodetection of ross river virus infection in eight persons among 53 from Tamil Nadu, India suspected of Chikungunya-like infection. Int. Assoc. Med. Pharm. Virol., 1: 1-6.
29. Das, P., I.Purushothaman and S. Rajarajan, 2011. Potential application of bioinformatics in development of an efficacious envelope protein based vaccine for Chikungunya: A pilot study. Int. Assoc. Med. Pharm. Virol., 1: 51-55.
30. Rajarajan, S., M. Asthana and G. Shanthi, 2010. In vitro bactericidal activity of lyophilized ethanolic extract of Indian almond (Terminalia catappa Linn.) fruit pulp on two pathogenic bacteria from subgingival plaques. Indian J. Nat. Prod. Resour., 1: 466-469.
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31. Hemamalini, V., N.K.U. Saratha, G. Shanthi and S. Rajarajan, 2010. Antibacterial activity of Allium sativum L. on five clinical isolates of otomycosis causative organism-an in vitro study. Biomedicine, 30: 473-479.
32. Ramachandran, G., R. Suresh, S. Kalpana, C.C. Kanagam, M. Niraja and S. Rajarajan, 2009. In vitro antimicrobial activity of p-toluene sulfonates. Indian J. Applied Microbiol., 10: 14-19.
33. Rajarajan, S., D. Anand, K.S. Palaniswamy, S. Thiyagarajan and Subramaniam, 2008. In vitro antibacterial properties in the unripe and ripe fruit pulps from three varieties of aegle marmelos correa. Indian J. Applied Microbiol., 9: 60-63.
34. Thiyagarajan, S., N.K. Yerra, S. Rajarajan and S. Subramanian, 2006. Incidence of sero positivity to human herpes viruses-1&2 among intra venousdrug users and their co-seropositivity to human immunodeficiencey virus (HIV) and hepatitis-B virus (HBV) in a pilot study. Biomedicine, 26: 38-46.
35. Subramanian, S., S. Rajarajan and S.P. Thyagarajan, 2006. Herbal splendour, medicinal health and modern medicine. Ann. Natl. Acad. Med. Sci.(India), 41: 69-76.
36. Rao, M.S., Geetha, S. Rajarajan, Thyagarajan and S. Subramanian, 2005. In vitro antifungal properties in the ripe fruit extract of trerminalia chebula for opportunistic and dermatophytic mycoses. Indian J. Applied Microbiol., 5: 12-15.
37. Banumathi, D. Anand, S. Rajarjan, S.P. Thyagarajan and S. Subramanian, 2005. In vitro anti bacterial properties in the seitz filtered extrrcats of Aegle marmeols L.Correa for gastroenteritic infection. Indian J. Applied Microbiol., 5: 12-15.
38. Rajarajan, S., S.P. Thyagarajan and S.S. Subramanian, 2004. A study on the in vitro antifungal activity in the unripe and ripe fruits of Terminalia chebula Retz. Indian J. Applied Microbiol., 4: 23-25.
39. Rajarajan, S., N.Y. kumar, D. Anand, S.S.R. Kumar, S.P. Thyagarajan and S.S. Subramanian, 2004. A study on the in vitro antibacterial activities in the leaf of Ocimum tenuiflorium Linn. and Ocimum americanum Linn. for gastroenteritic bacteria. Indian J. Applied Microbiol., 4: 5-7.
40. Narayanan, N., P. Thirugnanasambantham, S. Viswanathan, S. Rajarajan and E. Sukumar, 2004. Comparative antibacterial activities of Clerodendrum serratum and Premna herbacea roots. Indian J. Pharm. Sci., 66: 453-454.
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41. Rajarajan, S., R. Subashree, D. Anand, V. Sivalingam, S.P. Thyagarajan and S.S. Subramanian, 2003. A study on the in vitro antifungal properties in the aqueous root-bark extract of Decalepis hamiltonii Wright and Arn. Biomedicine, 23: 76-79.
42. Rajarajan, S., N.S. Gayathri, D. Anand, S.P. Thyagarajan and S.S. Subramanian, 2003. A study on the in vitro antifungal properties in the aqueous extracts of unripe fruit and ripe fruits of Terminalia catappa Linn. Indian J. Applied Microbiol., 3: 67-69.
43. Rajarajan, S., K. Sukumaran, Jayakiruba, D. Anand, S.P. Thyagarajan and S.S. Subramanian, 2003. In vitro antibacterial properties of root-bark and leaf extracts for Cassia auriculata Linn. for certain gastroenteritic bacteria. Indian J. Applied Microbiol., 3: 71-74.
44. Murali, O.M., S. Rajarajan and R. Ravanan, 2003. A GIS based avenue tree management system for T. Nagar, Chennai. Int. Arch. Photogrammetry Remote Sens. Spatial Inform. Sci., 34: 1125-1128.
45. Rajarajan, S., R. Balasubramanian, M. Priyadharshini, D. Anand, S.P. Thyagarajan and S. Subramanian, 2002. In vitro antibacterial properties in the leaf extract of two varieties of country borage (Plectranthes ambonicus (Lour) Spreng. Biomedicine, 22: 83-86.
46. Rajarajan, S., M. Viswnath, Balakrishnan and S.P. Thyagarajan, 2002. In vitro antimicrobial properties in the seitz filtered extracts of Acorus calamus rhizome for gastroenteric and pyogenic bacteria. Indian J. Microbiol., 42: 234-236.
47. Rajarajan, S., K.S. Palaniswamy, V. Kalaiselvi, S.P. Thyagarajan and S. Subramanian, 2002. In vitro anti bacterial properties in the three varieties root extract of Aegle marmeols L. Correa for gastroenteritic infection. Indian J. Microbiol., 42: 28-32.
48. Rajarajan, S., K.S. Palaniswamy, M.D. Elancheran, S.P. Thyagarajan and S. Subramanian, 2002. In vitro antibacterial activities in the ripe fruit extract of three varieties of Bael (Aegle marmelos L. Correa). Biomedicine, 22: 42-45.
49. Rajarajan, S., K. Kavitha, D. Anand, S. Mayuran, S.P. Thyagarajan and S. Subramanian, 2002. In vitro antibacterial properties in the ripe fruit extract of three varieties of Baele (Aegle marmelos L. Correa). Indian J. Applied Microbiol., 2: 42-46.
50. Rajarajan, S., K. Kavitha, D. Anand, S. Mayuran, S.P. Thyagarajan and S. Subramanian, 2002. In vitro antibacterial and antifungal properties in the aqueous leaf extracts of Henna (Lawsonia inermis L.). Indian J. Applied Microbiol., 2: 59-61.
51. Rajarjan, S., M.S. Rao, Geetha, S.P. Thyagarajan and S. Subramanian, 2001. In vitro anti fungal properties in the unripe fruit extract of trerminalia chebula for opportunistic and dermatophytic mycoses. Biomedicine, 21: 24-27.
52. Rajarajan, S., G. Ramadevi, D. Anand, S.P. Thyagarajan and S. Subramanian, 1999. In vitro antimicrobial properties in the seitz filtered extracts of Alpinia officinarum rhizome for gastroenteric and wound infections. Biomedicine, 19: 24-26.
53. Elanchezhiyan, M., S. Rajarajan, P. Rajendran, S. Subramanian and S.P. Thyagarajan, 1993. Antiviral properties of the seed extract of an Indian medicinal plant, Pongamia pinnata, Linn., against herpes simplex viruses: In-vitro studies on Vero cells. J. Med. Microbiol., 38: 262-264.
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54. Rajarajan, S., P. Rajendran, S.P. Thyagarajan and S. Subramanian, 1992. In vitro and in vivo toxicity on an Indian medicinal plant, Pongamia pinnata Linn. Biomedicine, 21: 47-52.