Ring chromosome 20 [r(20)] syndrome is a rare condition characterized by a non-supernumerary ring chromosome 20 replacing a normal chromosome 20. It is commonly seen in a mosaic state and is diagnosed ...

Moreover, occult mosaicism may mask differences conferred by the presence of cell lines with other X chromosome or Y chromosome abnormalities in ostensibly monosomic 45,X subjects. Most patients with ...

Purpose: Despite advances in harvesting and culturing techniques, analysis of the impact of these improvements on the observed frequency of chromosomal abnormalities in spontaneous abortions (SAB ...