title: Specific instability of the paracentric region of chromosome number 9 in a normal woman and her mongoloid son.
mesh_terms: D000328:Adult; D002675:Child, Preschool; D002906:Chromosomes, Human, 6-12 and X; D046508:Culture Techniques; D003597:Cytosine Nucleotides; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D009705:Nucleosides
chemical_list: D003597:Cytosine Nucleotides; D009705:Nucleosides