MATERNAL MOSAICISM AND DOWN'S SYNDROME (MONGOLISM).
D000293:Adolescent; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D004314:Down Syndrome; D005190:Family; D005826:Genetics, Medical; D006801:Humans; D007223:Infant; D009030:Mosaicism; D014314:Trisomy
ADOLESCENCE; CHROMOSOME ABNORMALITIES; GENETICS, HUMAN; INFANT; MONGOLISM; TRISOMY