title: Numerical X-chromosome anomalies at the maternity hospital of Lima.
abstract: Screening nuclear sex in buccal mucosa cells in 2,213 apparently normal newborns up to 24 hours from the Maternity Hospital of Lima showed that 3 newborn males out of 1,124, had chromatin-positive cells (2.66 per thousand). X-chromosome anomalies were not detected in 1,089 females examined.
mesh_terms: D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008403:Mass Screening; D010568:Peru; D012728:Sex Chromatin; D012729:Sex Chromosome Aberrations / Q000453:epidemiology*; D012730:Sex Chromosomes