title: The corpus luteum of the guinea pig. Fine structure at the time of maximum progesterone secretion and during regression.
mesh_terms: D000818:Animals; D003338:Corpus Luteum / Q000378:metabolism / Q000648:ultrastructure*; D005260:Female; D006168:Guinea Pigs; D003341:Luteolysis; D049590:Postpartum Period; D011247:Pregnancy; D011374:Progesterone / Q000378:metabolism*
chemical_list: D011374:Progesterone