title: Testicular steroid synthesis in the snake, Natrix sipedon pictiventris.
mesh_terms: D000818:Animals; D002854:Chromatography, Paper; D066298:In Vitro Techniques; D008297:Male; D011284:Pregnenolone; D011374:Progesterone / Q000378:metabolism*; D012911:Snakes; D013256:Steroids / Q000096:biosynthesis*; D013737:Testis / Q000378:metabolism*; D013739:Testosterone / Q000378:metabolism
chemical_list: D013256:Steroids; D013739:Testosterone; D011374:Progesterone; D011284:Pregnenolone