title: Presumptive evidence of two active X chromosomes in somatic cells of a human female.
mesh_terms: D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006570:Heterochromatin; D006801:Humans; D012728:Sex Chromatin / Q000648:ultrastructure; D012729:Sex Chromosome Aberrations; D012730:Sex Chromosomes; D014178:Translocation, Genetic
chemical_list: D006570:Heterochromatin