BANDING IDENTIFICATION OF CHROMOSOMAL ABNORMALITIES IN FOUR PATIENTS: RING (6), TRANSLOCATION (2q‐;15q+), TRANSLOCATION (21q;21q) AND DELETION (22q‐)

Abstract
Four children with mental deficiency and different chromosomal errors, previously reported, have been restudied with the use of the G-banding technique. The errors include ring-6, t(2q-; 15+), t(21q;21q) and 22q-.