title: Letter: Chromosomes in ataxia-telangiectasia.
mesh_terms: D000293:Adolescent; D001260:Ataxia Telangiectasia / Q000235:genetics* / Q000276:immunology; D002869:Chromosome Aberrations; D002901:Chromosomes, Human, 13-15; D002906:Chromosomes, Human, 6-12 and X; D006801:Humans; D007070:Immunoglobulin A / Q000302:isolation & purification; D007621:Karyotyping; D008297:Male; D012730:Sex Chromosomes
chemical_list: D007070:Immunoglobulin A