Albrecht, E D Serum estradiol in mid and late gestation and estradiol/progesterone ratio in baboons near parturition. [electronic resource] - Biology of reproduction Mar 1978 - 247-50 p. digital Publication Type: Journal Article ISSN: 0006-3363 Standard No.: 10.1095/biolreprod18.2.247 doi Subjects--Topical Terms: AnimalsEstradiol--bloodFemaleGestational AgeHaplorhiniPapio--bloodPregnancyPregnancy, AnimalProgesterone--blood