title: The relationship of normal--21-trisomy mosaicism and intellectual development.
mesh_terms: D000293:Adolescent; D000328:Adult; D001772:Blood Cell Count; D002648:Child; D002675:Child, Preschool; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome; D005260:Female; D006801:Humans; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D008875:Middle Aged; D009030:Mosaicism; D012867:Skin / Q000166:cytology; D014314:Trisomy