Johnson, T A The effect of pH on release of PGE2 from vaginal and endocervical preparations for induction of labour: an in-vitro study. [electronic resource] - British journal of obstetrics and gynaecology Nov 1992 - 877-80 p. digital Publication Type: Journal Article ISSN: 0306-5456 Standard No.: 10.1111/j.1471-0528.1992.tb14433.x doi Subjects--Topical Terms: CellsDelayed-Action PreparationsDinoprostone--pharmacokineticsFemaleHumansHydrogen--metabolismHydrogen-Ion ConcentrationLabor, InducedPessariesPregnancyTriacetin--metabolismVaginal Creams, Foams, and Jellies