title: Identification of a bactericidal factor (B-lysin) in amnionic fluid at 14 and 40 weeks' gestation.
abstract: Amnionic fluid (AF) specimens from 40 normal obstetric patients at 14 to 16 weeks' gestation and at 37 to 40 weeks' gestation were found to contain both lysozyme and a bactericidal substance identified as B-lysin. The concentrations of both lysozyme and B-lysin were significantly higher in the AF at 40 weeks' than at 14 weeks' gestation. B-lysin concentration in AF were also found to be significantly higher than in either cord or maternal blood.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D001412:Bacillus subtilis / Q000187:drug effects; D005260:Female; D005865:Gestational Age; D006801:Humans; D009113:Muramidase / Q000032:analysis; D011247:Pregnancy; D011506:Proteins / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D011506:Proteins; D009113:Muramidase