Parr, E L A possible role for granulocytes in the action of intrauterine contraceptive devices. [electronic resource] - Transactions of the Association of American Physicians 1967 - 123-32 p. digital Publication Type: Journal Article ISSN: 0066-9458 Subjects--Topical Terms: AnimalsFemaleGerm-Free LifeInflammationIntrauterine DevicesLeukocytes--physiologyMiceMuramidase--metabolismPregnancyRabbitsRatsUterine Diseases--etiologyUterus--pathology