title: Lack of metabolism of progesterone to 5 alpha-products in dog and guinea pig testes compared with immature rat testes.
mesh_terms: D000367:Age Factors; D000731:Androstanes / Q000096:biosynthesis* / Q000378:metabolism; D000736:Androstenes / Q000096:biosynthesis; D000738:Androsterone / Q000096:biosynthesis; D000818:Animals; D004285:Dogs; D006168:Guinea Pigs; D006908:Hydroxyprogesterones / Q000096:biosynthesis; D066298:In Vitro Techniques; D008297:Male; D051379:Mice; D011284:Pregnenolone / Q000378:metabolism; D011374:Progesterone / Q000378:metabolism*; D051381:Rats; D013045:Species Specificity; D013737:Testis / Q000378:metabolism*; D013739:Testosterone / Q000096:biosynthesis
chemical_list: D000731:Androstanes; D000736:Androstenes; D006908:Hydroxyprogesterones; D013739:Testosterone; D011374:Progesterone; D011284:Pregnenolone; D000738:Androsterone