A marker X chromosome.
D000293:Adolescent; D000328:Adult; D001345:Autoradiography; D002675:Child, Preschool; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D046508:Culture Techniques; D005260:Female; D006579:Heterozygote; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000235:genetics; D007621:Karyotyping; D007962:Leukocytes; D008297:Male; D008722:Methods; D008875:Middle Aged; D008938:Mitosis; D010375:Pedigree; D012730:Sex Chromosomes; D013936:Thymidine; D014316:Tritium
D014316:Tritium; D013936:Thymidine