title: Heterochromatic segment length of Y chromosome in 55 boys with malignant diseases.
abstract: By investigating heterochromatic segment variability in a group of boys with malignant disease a significantly greater value of the Yc:F index in relation to the control subjects was established.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D014644:Genetic Variation; D006570:Heterochromatin / Q000235:genetics*; D006801:Humans; D007223:Infant; D008297:Male; D009369:Neoplasms / Q000235:genetics*; D014998:Y Chromosome
chemical_list: D006570:Heterochromatin