Berg, C.D.F. van den

cytogenetic chorionic mosaicism result pregnancy chorionic villus sampling sampling karyotype diagnosis investigation stc-villi villu villi ltc-villi sample chromosome diagn chorionic villi prenat study analysis fetus trisomy amniocentesi abnormality follow-up chapter 36-39 table fluid number genet culture quality cytogenetic results opstal preparation laboratory level mosaic cytogenetic diagnosis figure gestation ultrasound brandenburg placental cytogenetic investigation women problem indication carrier follow-up investigations matemal metaphase af-cell outcome ledbetter chromosomal placental mosaicism distribution compartment kalousek technique fluid cells marker method brandenburg h nonnal trimester reason accuracy cv sampling syndrome van opstal probe failure tetraploid van den berg hybridization group