Use of PAPP-A Protein and the Free ßhCG Sub-unit for Biochemical Screeing of Chromosome-Conditioned Developmental Defect during the 9th - 14th Weeks of Gestation

Abstract

The biochemical screening of severe chromosomal anomalies was introduced by means of examination of PAPP-A and ßhCG in serum of pregnant women at the end of the first