Rajapaksa, G, Athukorala, I, Wijayarathna, L and Udagama-Randeniya, P (2006). Preliminary study on immunological, socioeconomic and disease characterization aspects of a population of rheumatoid arthritis patients in Sri Lanka. 3 rd Academic Sessions, Allergy and Immunology Society of Sri Lanka.

Premaratne, P H, Wicramarachchi, W T A, Perera, K L R L, Bandara S,Handunetti, S M, Yazdani, S, Chitnis, C and Udagama-Randeniya, P V (2006). IgM antibody responses to Plasmodium vivax Duffy Binding Protein in Sri Lanka. 3 rd Academic Sessions, Allergy and Immunology Society of Sri Lanka.

Wicramarachchi, W T A, Premaratne, P H, Dias, K V G S, Handunetti, S M,Gunasekera, A M, Wirth, D F and Udagama-Randeniya, P V (2006). Genetic complexity of P vivax infections in Sri Lanka. 62 nd Annual Sessions of the Sri Lanka Association for the Advancement of Science.

Jayasinghe, C D, Ratnasooriya, W D and Randeniya, PV (2006). An investigation on anti-malarial activity ofBarringtoniia acutangula aqueous root extract in rodent malaria models. Proceedings of the 26 th Annual Sessions of the Institute of Biology, Sri Lanka. Pp37.

Fernando, T S P, de Silva, A and Udagama-Randeniya, P V (2005). Intestinal parasites of some
selectedreptiles in the National Zoological Gardens, Sri Lanka. Proceedings of the 25 th Annual
Sessions of the Institute of Biology, Sri Lanka. Pp26.

Fernando, T S P, de Silva, A and Udagama-Randeniya, P V (2005). Ecto parasites of some
selectedreptiles in the National Zoological Gardens, Sri Lanka. Proceedings of the 25 th Annual
Sessions of the Institute of Biology, Sri Lanka. Pp25.

Premaratne, P H, Wicramarachchi, W T A, Perera, K L R L, Bandara S, Chitnis, C, Yazadni, S,Handunetti, S M and Udagama-Randeniya, P V (2004). Pattern of IgG1 and IgG3 isotype responses to Duffy BindingProtein in Sri Lanka. Proceedings of the Joint Academic Sessions of the Faculties of Science and Medicine, University of Colombo, pp 30.

Wansadhipathi, N K, Wicramarachchi, W T A, Perera, K L R L, Bandara S, Longacre, S,Handunetti, S M andUdagama-Randeniya, P V (2004). Human antibody responses to the Plasmodium vivax Duffy BindingProteinin Sri Lanka. Proceedings of the Joint Academic Sessions of the Faculties of Science and Medicine, University of Colombo, pp 29.

Wicramarachchi, W T A, Premaratne, P H, Illeperuma, R J, Perera, K L R L, Bandara S, Longacre, S,
Kocken, C, Thomas, A,Handunetti, S M andUdagama-Randeniya, P V (2004). Heterogeneity of
isotype specific antibody responses againstPlasmodium vivax asexual blood stage antigens in Sri
Lanka. Proceedings of the 24 th Annual Sessions of the Institute of Biology, Sri Lanka. pp5.

Premaratne, P H, Wansadhipathi, N K, Wicramarachchi, W T A, Perera, K L R L, Bandara S,Handunetti, S Mand Udagama-Randeniya, P V (2004). Comparison of two different recombinant proteins representing region II of the Duffy Binding Protein of Plasmodium vivax by assaying for natural antibodies. 2 nd Academic Sessions, Allergy and Immunology Society of Sri Lanka. pp B4.

Wicramarachchi, W T A,Ganguly, I, Perera, K L R L, Bandara, S,Udagama-Randeniya, P V,Handunetti, S M, Munesinghe, A and Wirth, D F (2004). Clonality and genetic diversity of Plasmodium vivaxinfections under prevailing unstable malaria conditions in Sri Lanka. 2 nd Academic Sessions, Allergy and Immunology Society of Sri Lanka. pp B5.

Handunetti, S M,Udagama-Randeniya, P V,Premaratne, P H, Perera, I C, Harendra, G, Jayakody, J R A C,Samaratunge, P and Ratnasooriya, W D (2004). An investigation on anti-malarial and anti-
inflammatoryeffects of Aranya Thulasi Kasaya in rodent malaria models. Proceedings of the
24 th Annual Sessions of the Institute of Biology, Sri Lanka. pp7.

Wickramarachchi W T A, Premaratne P H, Perera K L R L, Bandara S, Longacre S,Kocken C, Thomas A, Chitnis C, Handunnetti S M and Randeniya P V (2003). Naturally elicited antibody responses to Plasmodium vivax asexual stage antigens in Sri Lanka. Proc.23rdAnnual Sessions of the Institute of Biology, Sri Lanka, pp15.

Seneviratne, Sampath S, Fernando, Chandrika and Udagama-Randeniya, Preethi V. (2002).Specificity of ecto parasites of three cave dwelling Chiroptera (Rousettus leschenaulti, Rhinolophus rouxii, Hipposiderosspeoris ) in selected cave roosts of Sri Lanka, 54 th Annual Sessions of the Sri Lanka Association for the Advancement of Science. Pp 166.

Seneviratne, Sampath S and Udagama-Randeniya, Preethi V (2002). Ecto parasites of cave
dwellingchiropterans in selected roosts of the wet and intermediate zones of Sri Lanka, Proceedings
of the 22 nd Annual Sessions of the Institute of Biology, Sri Lanka. pp 41.

Seneviratne, S S and Udagama-Randeniya, P V (2002), Ecto parasites of cave dwelling chiropterans in selected roosts of the wet and intermediate zones of Sri Lanka, Proceedings of the 22 nd Annual
Sessions of the Institute of Biology, Sri Lanka, p 41-42.

Wicramarachchi, W T A, Illeperuma, R J, Perera, K L R L, Bandara S, Longacre, S,Handunetti, S M and Udagama-Randeniya, P V (2002). Characterization of subclass specific antibody response to p19 representing Plasmodium vivaxmerozoite protein1 (MSP-1 19 ) in endemic and non-endemic
populations in Sri Lanka. Proceedings of the 22 nd Annual Sessions of the Institute of Biology, Sri
Lanka. pp55.

Wicramarachchi, W T A, Illeperuma, R J, Perera, K L R L, Bandara S, Lokupitiya, R S, Longacre,
S,Handunetti, R S and Udagama-Randeniya, P V (2001). Pattern of IgG1 and IgG3 isotype
responses to C-terminal processing products of Plasmodium vivax Merozoite Surface Protein 1 in
endemic populations of Sri Lanka. Proc.57 th Ann.Sessions, Sri Lanka Association for the Advancement of Science, pp18.

Wickramarachchi,W T A,Perera, K L R L, Bandara, S, Thomas, A,Handunetti, S M and Udagama-
Randeniya, P V (2001). Antibody responses to a leading vaccine candidate PV66/AMA-1 induced by
natural infectionsofPlasmodium vivax in humans. Proc.21th Ann.Sessions, Institute of Biology, Sri
Lanka, pp 26.

Wickramarachchi, W T A, Perera, K L R L, Bandara, S, Longacre, S, Handunnettti, S M and Randeniya, P V (2000). Seroepidemiology of potential vaccine candidate p42 representing a C-terminal fragment of Plasmodium vivax Merozoite Surface Prorein –1. Proc.1 st Ann.Sessions, University of Colombo, Sri Lanka,pp35.

Digana, P M C B, Yapa,W.B., Randeniya, P V and Ratnasooriya,W D (2000). Roost selection of Sri
Lankanbats.Proc.1 st Ann.Sessions, University of Colombo, Sri Lanka,pp39.

Wickramarachchi, W T A, Perera, K L R L, Bandara, S, Longacre, S, Handunnettti, S M and Randeniya, P V(2000). Immunoepidemiology of p19: a potential vaccine candidate based on Plasmodium vivax MSP1. Proc.20th Ann.Sessions Institute of Biol.Sri Lanka,pp37.

Samaranayake, H S, Rajapakse, R P V J, and Randeniya, P V (2000). Ecto and endo parasites of
Eyphylctishexadactylus and Bufo melanostictis in suburbs of Colombo. Proc.20th Ann.Sessions
Institute of Biol.Sri Lanka,pp35.

Samaranayake, H S, Attygale, D T,Rajapakse, R P V J, and Randeniya, P V (2000). Ecology of ecto and endo parasites of six toed green frog,Eyphylctishexadactylus in suburbs of Colombo. Proc.1 st
Ann.Sessions, University of Colombo, Sri Lanka,pp21.

Kalubowila, D G W, Randeniya, P V and Rajapakse, R P V J (2000). Development and evaluation of
adiagnostic ELISA for bovine sarcosystosis in Sri Lanka. Proc.1 st Ann.Sessions, University of
Colombo, Sri Lanka,pp34.

Saparamadu, S P B K, Cheong, C H, Gunasekera, A, ,Rajapakse, R P V J, and Randeniya, P V (2000). Cestode infections of layers from selected commercial poultry farms in the Colombo district. Proc.1 st Ann.Sessions, University of Colombo, Sri Lanka,pp22.

Rodrigo, S H S D, Dharmawardene, V, Randeniya, P V and Rajapakse, R P V J (2000). A survey on
somepotentially zoonotic parasites in the Colombo Municipal Abbatoir,Proc.1 st Ann.Sessions,
University of Colombo, Sri Lanka,pp23.

de Silva, M S, Randeniya, P V and Abeywickrema,W(1998). Larval breeding habits of dengue-
vectorAedesspp. in Attidiya area. Proc.Sri Lanka Assoc. Advt. Sci. 54th Annual Session, pp206-207.

Kumarasinghe, J C, Digana, P M C B , Yapa,W B , Randeniya, P V, Ratnasooriya,W D (1998).
Foodpreference of short-nosed fruit bat Cynopterus sphinx. Proc.18th Ann.Sessions Institute of
Biol.SriLanka,pp20.

Yapa,W.B., Digana, P M C B, Ratnasooriya,W D, Rubsamen, R, Costa, H H and Randeniya, P V ,
(1998).Breeding associated migration of Miniopterus schreibersiibetween two natural caves in Sri
Lanka.Proc.18th Ann.Sessions Institute of Biol.Sri Lanka, pp21