Article
Extreme variant of enlarged heterochromatin region on chromosome 9Q in a normal child and multiple family members.
Fetal and pediatric pathology - 1 Jan 2009
Steffensen Thora S, Gilbert-Barness Enid, Sandstrom Mary, Bell John R, Bryan Jenny, Sutcliffe Maxine J
Abstract excerpt
Heteromorphisms of chromosome 9 are among the most common variations in the human karyotype. The pericentromeric polymorphisms of chromosome 9 include variations in the size of q-arm heterochromatin, pericentric inversions, and rarely, additional C-band-negative, G-band-positive material. The finding of a polymorphic variant, either in prenatal screening or in chromosomal analysis for phenotypic abnormalities,...
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