Hewawasam S L, Constantine R, Perera K A and Udagama P V (2016). Association between human papillomavirus infections and lung cancers in Sri Lanka. 36^th Annual Sessions of the Institute of Biology, Sri Lanka.Pp 44.

Gunathilake VK and Udagama P V(2016). Acute inflammatory and cancer chemopreventive activity of Haliclona (Soestella) sp crude extract: A novel Sri Lankan marine sponge species. Allergy &Immunology Society of Sri Lanka, 8^th Biennial Scientific Sessions.Pp27. (wonsecondprize for presentations in Basic Immunology)

Jayasinghe C D,Ratnasooriya WD and Udagama PV (2015). The mature leaf concentrate of Sri Lankan Wild type Carica papaya stimulates in vitro proliferation and phagocytosis of rat immune cells. Proceedings of the Annual Research Symposium 2015, University of Colombo, Pp113

Kanatiwela – de Silva C and Udagama PV(2015). Population diversity of Weligama coconut leaf wilt phytoplasma strains in Weligama, Sri Lanka. Proceedings       of the annual research symposium 2015, University of Colombo. Pp117.

Muraleetharan S, Gunasekera S, Perera R, Perera K and Udgama PV (2015). Molecular detection of human papillomavirus infections among oral and oropharyngeal cancer patients in Sri Lanka. 8^th International Research Conference, Kotalawala Defense University, Sri Lanka.Pp 192

Gunathilake V K, Ratnasooriya W D and Udagama PV (2015). Modulation of in vitro phagocytic activity, cell proliferation and cytokine production in the Wistar rat model by a Sri Lankan Haliclona(Soestella) sp sponge crude extract. Proceedings of the 35th Annual Sessions of the Institute of Biology,Pp 29

Mathiaparanam K J, Seneviratne SS and Udagama PV (2015). Influence of anthropogenic perturbation on energy trade-offs of the rock pigeon (Columba livia). 8^th International Research Conference, Kotalawala Defense University, Sri Lanka.Pp 174

Jayasinghe C D, Jayawardhane NDCKK and Udagama PV. (2015). In vivo antioxidant activity of Sri Lankan wild type Carica papaya L. mature leaf concentrate in a rat model. Proceedings of the 35th Annual Sessions of the Institute of Biology,Pp 27

Jayasinghe CD, Ratnassoriya WD and Udagama PV. (2015). In vitro procoagulant and thrombolytic activitiesof Sri Lankan Wild type Carica papaya L. mature leaf concentrate against blood coagulation cascade. Proceedings of the 2nd scientific sessions of the Sri Lanka Association for Laboratory Animal Science. Pp49        (Won award for best presentation)

Jayawardena U A,Wickramasinghe D D,Ratnasooriya W D andUdagama PV (2015). Euphlyctis hexadactylus: Toxicity and mutagenicity of a selected heavy metal mixture revealed by the Allium cepa bioassay. Proceedings of the Annual Research Symposium, University of Colombo, 2015, Pp114.

Goonawardhana NDS, Jayasekara GSKW, Elanahai V, Udagama PV, Ileperuma RJ and Fernandopulle ND. (2015) Characterization of novel mini STR loci to aid the analysis of degraded DNA evidence in Sri Lankan forensic case work. 8^th International Research Conference,Kotalawala Defense University, Sri Lanka.Pp 156.

Gunathilake V K, Ratnasooriya W D and Udagama P V (2015). Anti inflammatory activity of Haliclona (Soestella) sp marine sponge crude extract in murine models: inhibition of pro inflammatory cytokines and leukocyte migration. Proceedings of the Annual Research Symposium , University of Colomb, 2015Pp 112.

Kanatiwela-de Silva C, Wijesekara R and Udagama P V (2014). Virtual RFLP analyses, ELISA cross reactivity and phylogenetic positioning of Weligama Coconut Leaf Wilt phytoplasma. Allergy & Immunology Society of Sri Lanka, 7^th Biennial Scientific Sessions. Pp 22 (won first prize for presentations in Basic Immunology)

Kanatiwela – de Silva C, Dickinson M and Udagama PV Rapid and sensitive detection of sugarcane white leaf and sugarcane grassy shootdiseases by loop mediated isothermal amplification (LAMP) assay. Proceedings of the annual researchsymposium 2014, University of Colombo. Pp 216

Kanatiwela-de Silva C, and Udagama P V. (2014).Phylogenetic evaluation of phytoplasma causing Sugarcane White Leaf and Sugarcane Grassy Shoot Diseases in Sri Lanka. Proceedings of the 70th Annual sessions of the Sri Lanka Association for the Advancement of Science. Pp 121.

Gunathilake VK, Ratnasooriya WD, De Voogd NJ and Udagama P. (2014). Neopetrosia sp, a marine sponge from Sri Lanka with immunomodulatory activities. Higher Education for the Twenty First Century Symposium. Pp 107

Jayasinghe CD, Ratnassoriya WD and Udagama PV. (2014) In vitro anti oxidant activity of Sri Lankan wild type Caricapapaya L. mature leaf concentrate. Accepted for the Proceedings of the 70^th Annual sessions of the Sri Lanka Association for the Advancement of Science. Pp 33

Jayasinghe CD, Ratnassoriya WD and Udagama PV. (2014). In vitro and in vivo Haemostatic activity of Sri Lankan Wild type Carica papaya L. mature leaf concentrate. Proceedings of the annual research symposium 2014. University of Colombo, Pp 218

Jayawardena U, Wickramasinghe D, Ratnasooriya WD,Udagama P. (2014). Immunomodulation of IL-6, IL-10, IFN–γ and TNF-α levels associated with heavy metal exposure in Euphylictis hexadactylus (Anura: Ranidae). Allergy &Immunology Society of Sri Lanka, 7^th Biennial Scientific Sessions.Pp 25. (won second prize for presentations in Basic Immunology)

Jayawarena UA,Wickremasinghe DD, Ratnasooriya WD and Udagama PV (2014).Histopathological quantification of heavy metal mediated tissue damages detected in Euphlyctis hexadactylus (Anura: Ranidae) in an urban polluted wetland in Sri Lanka. Higher Education for the Twenty First Century Symposium, Pp 106.

Nirmani MD, Kanatiwela – de Silva C, Kathriarachchi HS and Udagama PV. (2014). DNA marker based phylogeny for improved resolution of phytoplasma taxonomy. Proceedings of the 70^th Annual sessions of the Sri Lanka Association for the Advancement of Science. Pp123

Bamunuarachchi B A G S, Premakumara G A S, Ratnasooriya W D and Udagama P V (2014). Artemisia vulgarisLethanolic leaf extract increase platelet and WBC in a rat Model. Sri Lanka Association for Laboratory Animal Science, Vol 1; Pp 47 (won the Dr Sharmini Jayasekera awrd for the best oral communication, judged by an international panel oflaboratory animal scientists).

Kanatiwela C, Dickinson M, Wijesekara, Udagama PV(2013). Phylogenetic Relationship of the Weligama Coconut Disease Associated Phytoplasma Based on the secA Gene. . Proceedings of the 33^rd Annual sessions of Institute of Biology, Sri Lanka. Pp 58

Ratnayake HU, Weerakoon DK, Yapa WB, Udagama PV(2013). Impact of parasite load on host health status & immune defences: Investigations using the Fulvous fruit bat (Rousettus leschenaultia).Proceedings of the 69^th Annual sessions of the Sri Lanka Association for the Advancement of Science (2013), Pp 87

Gunathilaka VK, Ratnasooriya WD, Udagama PV(2013). Immunomodulatory Activity of Two Sri Lankan Demospongiae Marine Sponges Species from Katthankudy, Batticaloa. (2013)Proceedings of the 33^rd Annual sessions of Institute of Biology, Sri Lanka. Pp 61

Gunathilaka VK, Ratnasooriya WD, Udagama PV(2013). Immunomodulatory Activty of Two Sri Lankan Demospongiae Marine Sponges Species from Katthankudy, Batticaloa. (2013)Proceedings of the 33^rd Annual sessions of Institute of Biology, Sri Lanka. Pp 61.

Gunathilake, VK, Ratnasooriya, WD, Udagama PV(2013). Immunomodulatory activity of Sri Lanka Demospongiae Marine sponge species (Class Demospongiea): A Pilot Study. Proceedings of the 69^th Annual sessions of the Sri Lanka Association for the Advancement of Science, Pp 89

Jayawardena UA, Wickramasinghe, DD, Ratnasooriya, WD, Udagama PV(2013). Heavy metal induced toxicity of the Indian green frog, Euphlyctis hexadactylus (Ranidae), in the Bellanwila-Attidiya sanctuary.Proceeding of the Annual Research Symposium, University of Colombo, Pp 190

Gunathilake, VK, Ratnasooriya, WD, Udagama PV(2013). Free radical scavenging effect of a few selected Sri Lankan marine sponges (Demospongiae). Proceeding of the Annual Research Symposium, University of Colombo, Pp 191

Ratnayake HU, Weerakoon DK, Yapa WB, Udagama PV(2013). Ectoparasites of the Single Species Colony of Rousettus leschenaultia (Fulvous Fruit Bat) in Maha Induruwa, Sri Lanka. (2013). Proceedings of the 33^rd Annual sessions of Institute of Biology, Sri Lanka. Pp 59.