Palitharatne, C.D.Vidyaratne, M.G.A.Ratnasooriya, W.D.2012-04-042012-04-041998Ceylon Journal of Science (Biological Sciences)25pp.52-57https://dl.nsf.gov.lk/handle/1/7619Biological SciencesRat biteSemenOral cavitySpermatozoaThe presence of spermatozoa in the oral cavity of sexually active male ratesArticle