title: In vitro biosynthesis of steroids from progesterone by the ovaries and pyloric ceca of the starfish Asterias rubens.
mesh_terms: D004092:20-alpha-Dihydroprogesterone / Q000096:biosynthesis; D000735:Androstenedione / Q000096:biosynthesis; D000818:Animals; D003900:Desoxycorticosterone / Q000096:biosynthesis; D004064:Digestive System / Q000378:metabolism; D005260:Female; D006908:Hydroxyprogesterones / Q000096:biosynthesis; D066298:In Vitro Techniques; D010053:Ovary / Q000378:metabolism; D011277:Pregnanediones / Q000096:biosynthesis; D011374:Progesterone / Q000378:metabolism*; D013215:Starfish / Q000378:metabolism*; D013254:Steroid 17-alpha-Hydroxylase / Q000378:metabolism; D013255:Steroid 21-Hydroxylase / Q000378:metabolism; D013256:Steroids / Q000096:biosynthesis*; D013739:Testosterone / Q000096:biosynthesis
chemical_list: D006908:Hydroxyprogesterones; D011277:Pregnanediones; D013256:Steroids; D004092:20-alpha-Dihydroprogesterone; D013739:Testosterone; D000735:Androstenedione; D003900:Desoxycorticosterone; D011374:Progesterone; D013255:Steroid 21-Hydroxylase; D013254:Steroid 17-alpha-Hydroxylase