this study examined the morphology and immunocytochemical staining patterns of distribution of beta-human chorionic gonadotropin ( beta-hcg ) , human placental lactogen ( hpl ) , placental alkaline phosphatase ( plap ) , and pregnancy-specific beta-1 glycoprotein ( sp1 ) in 13 third-trimester placentas associated with hydrops fetalis and six normal control placentas matched for gestational age ( +/- 2 weeks ) .
C0106132
beta-human chorionic gonadotropin
C0032043
placentas