title: [Mental retardation and fragile site Xq27-28: 2 affected brothers and their mother within the framework of chromosome instability].
mesh_terms: D000328:Adult; D002648:Child; D043283:Chromosome Fragile Sites; D002873:Chromosome Fragility; D005260:Female; D008040:Genetic Linkage; D006579:Heterozygote; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D014960:X Chromosome
vernacular_title: Ritardo mentale e sito fragile Xq27-28: due fratelli affetti e madre con quadro di instabilità cromosomica.