Mosaicism of an abnormally long B chromosome in a boy with physical and mental retardation.
D002648:Child; D003878:Dermatoglyphics; D006128:Growth; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D009030:Mosaicism; D012728:Sex Chromatin