Rudolph, A M Validation of the antipyrine method for measuring fetal umbilical blood flow. [electronic resource] - Circulation research Aug 1967 - 185-90 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0009-7330 Standard No.: 10.1161/01.res.21.2.185 doi Subjects--Topical Terms: AnimalsAntipyrineElectromagnetic PhenomenaEvaluation Studies as TopicFemaleFetus--physiologyOsmolar ConcentrationPregnancyRegional Blood FlowRheologySheepUmbilical Cord--blood supply