with this extraction procedure and chromatographic method , six amniotic fluid phospholipids [ phosphatidylcholine ( lecithin ) , sphingomyelin , phosphatidylinositol , phosphatidylserine , phosphatidylethanolamine , and phosphatidylglycerol ] are completely resolved in less than 70 min from the time the specimen is received .
C1959616
phosphatidylcholine
C0031617
lecithin