Forestier, F Low molecular weight heparin (PK 10169) does not cross the placenta during the second trimester of pregnancy study by direct fetal blood sampling under ultrasound. [electronic resource] - Thrombosis research Jun 1984 - 557-60 p. digital Publication Type: Journal Article ISSN: 0049-3848 Standard No.: 10.1016/0049-3848(84)90260-3 doi Subjects--Topical Terms: AdultBlood Coagulation--drug effectsFactor X--antagonists & inhibitorsFactor XaFemaleFetal Blood--analysisHeparin--analysisHumansMaternal-Fetal ExchangePregnancyPregnancy Trimester, SecondProthrombin--antagonists & inhibitors