title: An extra small metacentric autosome in a mentally retarded boy with multiple malformations.
mesh_terms: D000015:Abnormalities, Multiple / Q000235:genetics*; D002648:Child; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D003878:Dermatoglyphics; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D007962:Leukocytes / Q000166:cytology; D008297:Male; D009061:Mouth Mucosa / Q000166:cytology; D012728:Sex Chromatin; D014314:Trisomy