title: The concentration of hyaluronate in amniotic fluid.
abstract: The concentration of sodium hyaluronate has been determined in amniotic fluid by a specific radioassay. It shows a large individual variation. The mean concentration is approximately 20 micrograms/ml at Weeks 16-20 of the gestational period. It drops to approximately 1 micrograms/ml at Week 30 and is then constant until the end of the pregnancy.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D005865:Gestational Age; D006801:Humans; D006820:Hyaluronic Acid / Q000302:isolation & purification*; D011247:Pregnancy; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins; D006820:Hyaluronic Acid