[Concomitance in one family of mongolism with mosaicism (trisomy 21) in the brother and triple-X syndrome (XXX) in the sister].
D002675:Child, Preschool; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009030:Mosaicism; D012729:Sex Chromosome Aberrations / Q000235:genetics*
Concomitance dans une famille d'un mongolisme en mosaïque (trisomie 21) chez le frére et dún syndrome triplo-X (XXX) chez la soeur.