title: Three generations and seven family members with a t(21q22q) chromosome.
mesh_terms: D000328:Adult; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000235:genetics; D005260:Female; D006801:Humans; D007223:Infant; D007621:Karyotyping; D008297:Male; D010375:Pedigree; D013194:Staining and Labeling; D014178:Translocation, Genetic