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Alfred H Free Ph D and Helen M Free B
Pitkin M D
Edward W Bermes Ph D and Lawrence Crolla Ph D
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abnormal abortion activity albumin Amer.J amniocentesis amniotic cells amniotic fluid analysis antibody assay baby bilirubin biochemical blood Brit buffer cent centrifuge chorionic Clin clinical coagulation concentration in amniotic correlation creatinine cultured amniotic decrease deficiency dermatan sulfate detection determined disorders early pregnancy electrophoresis enzyme estriol estrogens factors fetal maturity fetal urine fetus fetuses fibrinogen fibrinolysis fibroblasts Figure g/dl genetic gestational age glucose glycogen storage disease Gynecol hexosaminidase hormone human placental human placental lactogen increase indicate infants laboratory lecithin Lesch-Nyhan syndrome lipid liver lung maternal serum measured metabolism method mg/dl mmol/liter mucopolysaccharides normal pregnancy Obstet Obstetrics and Gynecology osmolality osmotic patients placental lactogen plasma prenatal diagnosis present protein ratio reagent reported sample shows sodium solution sphingomyelin steroids studies substrate sulfate syndrome Table Tay-Sachs disease techniques tissue titer total protein trimester tube urea urea concentration uric acid Usategui-Gomez values weeks of gestation