Porter, D G Myometrium of the pregnant guinea pig: the probable importance of relaxin. [electronic resource] - Biology of reproduction Dec 1972 - 458-64 p. digital Publication Type: Journal Article ISSN: 0006-3363 Standard No.: 10.1093/biolreprod/7.3.458 doi Subjects--Topical Terms: AnimalsFemaleGuinea PigsMuscle ContractionOxytocin--pharmacologyParabiosisPregnancyPregnancy, AnimalPressureRelaxin--physiologyUterus--physiology