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Decrease of Y chromatin frequency with time after fixation of blood smear

S Nanko

    Forensic Science International
    |January 1, 1980
    PubMed
    Summary
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    The frequency of Y chromatin positive lymphocytes in adolescent males (13-19 years) averaged 59.4%. This Y chromatin marker decreased significantly over time following blood smear fixation.

    Area of Science:

    • Cytogenetics
    • Hematology
    • Molecular Biology

    Background:

    • Y chromatin detection in lymphocytes is a marker used in various genetic and clinical studies.
    • Understanding factors affecting Y chromatin stability is crucial for accurate diagnostic and research applications.

    Purpose of the Study:

    • To determine the average frequency of Y chromatin positive lymphocytes in adolescent males.
    • To investigate the effect of time after fixation on the detectability of Y chromatin in blood smears.

    Main Methods:

    • Analysis of Y chromatin positive lymphocytes in peripheral blood smears from males aged 13-19 years.
    • Quantitative assessment of Y chromatin frequency at different time points post-fixation.

    Main Results:

    Related Experiment Videos

    • The average frequency of Y chromatin positive lymphocytes was 59.4% in the studied adolescent male population.
    • A significant decrease in Y chromatin positive lymphocyte frequency was observed with increasing time after blood smear fixation.

    Conclusions:

    • Adolescent males exhibit a substantial frequency of Y chromatin positive lymphocytes.
    • The stability of Y chromatin in fixed blood smears is time-dependent, necessitating timely analysis for reliable results.