title: In vitro synthesis of an inducer for germinal vesicle breakdown of fish oocytes, 17 alpha,20 beta-dihydroxy-4-pregnen-3-one by ovarian tissue preparation of amago salmon (Oncorhynchus rhodurus).
mesh_terms: D000818:Animals; D003460:Crystallization; D005260:Female; D006908:Hydroxyprogesterones / Q000096:biosynthesis* / Q000378:metabolism; D009865:Oocytes / Q000502:physiology*; D010053:Ovary / Q000378:metabolism*; D010063:Ovum / Q000502:physiology*; D012474:Salmon / Q000378:metabolism*
chemical_list: D006908:Hydroxyprogesterones; C021012:17 alpha,20 beta-dihydroxypregn-4-en-3-one