title: Seasonal androgenesis in the male water snake, Nerodia sipedon.
mesh_terms: D000818:Animals; D001831:Body Temperature; D002369:Castration; D003080:Cold Temperature; D005260:Female; D007986:Luteinizing Hormone; D008297:Male; D012621:Seasons; D012726:Sexual Behavior, Animal; D012911:Snakes / Q000502:physiology*; D013091:Spermatogenesis; D013737:Testis / Q000032:analysis; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone; D007986:Luteinizing Hormone