Chromosomes and mental changes in octogenarians. Preliminary findings.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D000782:Aneuploidy; D002875:Chromosomes; D005260:Female; D006801:Humans; D007621:Karyotyping; D007962:Leukocytes; D008297:Male; D008606:Mental Processes; D012730:Sex Chromosomes; D013223:Statistics as Topic