title: Fragile X in a normal male: a cautionary tale.
mesh_terms: D000328:Adult; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D007360:Intelligence; D008297:Male; D009030:Mosaicism; D012730:Sex Chromosomes / Q000648:ultrastructure*; D014960:X Chromosome / Q000648:ultrastructure*