[Trisomy 21 by translocation (21q,21q) in two sibs of a mother with a supernumerary microchromosome (author's transl)].
D002869:Chromosome Aberrations; D002871:Chromosome Banding; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D010375:Pedigree; D014178:Translocation, Genetic
Trisomie 21 par translocation 21/21 chez deux fils d'une mére avec un microchromosome surnuméraire.