[Trisomy 21].
D000293:Adolescent; D000328:Adult; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D002869:Chromosome Aberrations; D004314:Down Syndrome / Q000175:diagnosis* / Q000235:genetics / Q000523:psychology; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D014178:Translocation, Genetic
La trisomie 21.