Klinefelter's syndrome(redirected from 49,XXXXY syndrome)
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Klinefelter's syndrome[′klīn‚fel·tərz ‚sin‚drōm]
A complex of symptoms associated with hypogonadism in males as an accompaniment of an anomaly of the sex chromosomes; somatic cells are found to have a Y chromosome and more than one X chromosome.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.