title: Decrease of Y chromatin frequency with time after fixation of blood smear.
abstract: The average frequency of Y chromatin positive lymphocytes was 59.4% among males aged 13 - 19 years. The frequency decreased significantly with time after fixation of the blood smear.
mesh_terms: D000293:Adolescent; D000328:Adult; D003584:Cytological Techniques; D005404:Fixatives; D006801:Humans; D008214:Lymphocytes / Q000032:analysis*; D008297:Male; D012728:Sex Chromatin / Q000032:analysis*; D013997:Time Factors
chemical_list: D005404:Fixatives