title: 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.
mesh_terms: D000328:Adult; D001777:Blood Coagulation / Q000187:drug effects*; D005170:Factor X / Q000037:antagonists & inhibitors; D015951:Factor Xa; D005260:Female; D005312:Fetal Blood / Q000032:analysis*; D006493:Heparin / Q000032:analysis* / Q000494:pharmacology; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011516:Prothrombin / Q000037:antagonists & inhibitors
chemical_list: D011516:Prothrombin; D005170:Factor X; C025337:Factor IIa; D006493:Heparin; D015951:Factor Xa