title: Identification by fluorescence of apparently extra human F chromosomes as G chromosomes with giant satellites.
mesh_terms: D002869:Chromosome Aberrations; D002903:Chromosomes, Human, 19-20; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000235:genetics; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008856:Microscopy, Fluorescence; D014314:Trisomy