The occurrence of 48-chromosome cells in a patient with Klinefelter's syndrome over a six-years period. Identification by autoradiography of the 48th chromsome.
D000328:Adult; D001345:Autoradiography; D004261:DNA Replication; D006801:Humans; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000235:genetics*; D008297:Male; D012730:Sex Chromosomes