title: Quantitation and characterization of alpha1-antitrypsin in amniotic fluid from first trimester pregnancies.
mesh_terms: D000653:Amniotic Fluid / Q000201:enzymology*; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011480:Protease Inhibitors; D000515:alpha 1-Antitrypsin / Q000097:blood / Q000378:metabolism*
chemical_list: D011480:Protease Inhibitors; D000515:alpha 1-Antitrypsin