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Variants of chromosome 9 in phenotypically normal individuals
K F Cheong1, L A Knight, M Tan
1Department of Pathology, Singapore General Hospital, Singapore.
Annals of the Academy of Medicine, Singapore
|May 1, 1997
Abstract:
The human chromosome 9 displays the highest degree of structural variability. Four different types of variants are described including pericentric inversion, extra G-positive band in the q arm, additional G-positive band in the p arm and duplication of band 9q21-q22. It is important to demonstrate inheritance from a phenotypically normal individual in order to differentiate between a variant chromosome and an abnormal chromosome.