title: Steroid synthesis by the seminiferous tubules of the snake Naja naja.
mesh_terms: D015068:17-Ketosteroids / Q000096:biosynthesis / Q000302:isolation & purification; D000731:Androstanes / Q000096:biosynthesis / Q000302:isolation & purification; D000818:Animals; D002247:Carbon Isotopes; D002855:Chromatography, Thin Layer; D003460:Crystallization; D003687:Dehydroepiandrosterone / Q000302:isolation & purification; D006651:Histocytochemistry; D066298:In Vitro Techniques; D008297:Male; D011284:Pregnenolone / Q000378:metabolism; D011374:Progesterone / Q000378:metabolism; D012708:Sertoli Cells / Q000378:metabolism; D012911:Snakes / Q000378:metabolism*; D013256:Steroids / Q000096:biosynthesis*; D013737:Testis / Q000378:metabolism*; D013739:Testosterone / Q000096:biosynthesis; D014316:Tritium
chemical_list: D015068:17-Ketosteroids; D000731:Androstanes; D002247:Carbon Isotopes; D013256:Steroids; D014316:Tritium; D013739:Testosterone; D003687:Dehydroepiandrosterone; D011374:Progesterone; D011284:Pregnenolone