Fragile sites on chromosomes.
D000293:Adolescent; D043283:Chromosome Fragile Sites; D002873:Chromosome Fragility; D005260:Female; D005819:Genetic Markers; D006579:Heterozygote; D006801:Humans; D006948:Hyperkinesis / Q000188:drug therapy; D008607:Intellectual Disability / Q000235:genetics; D002955:Leucovorin / Q000627:therapeutic use; D008297:Male; D011296:Prenatal Diagnosis; D012729:Sex Chromosome Aberrations / Q000175:diagnosis; D013737:Testis / Q000002:abnormalities; D014960:X Chromosome
D005819:Genetic Markers; D002955:Leucovorin