Csapo, A I Gestational changes in the progesterone and prostaglandin F levels of the guinea-pig. [electronic resource] - Prostaglandins Jan 1981 - 53-64 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. ISSN: 0090-6980 Standard No.: 10.1016/0090-6980(81)90196-9 doi Subjects--Topical Terms: AnimalsFemaleGuinea Pigs--physiologyLitter SizeOvary--metabolismPlacenta--metabolismPregnancyPregnancy, AnimalProgesterone--metabolismProstaglandins F--metabolismTime FactorsUterus--metabolism