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The transition in frequency of Y‐chromatin in males during early infancy
Author(s) -
LyberatouMoraitou E.,
Kourounis G. S.,
GrigoriKostaraki P.,
Lyberatos C.,
Aravantinos D.,
Kaskarelis D.
Publication year - 1981
Publication title -
clinical genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.543
H-Index - 102
eISSN - 1399-0004
pISSN - 0009-9163
DOI - 10.1111/j.1399-0004.1981.tb01051.x
Subject(s) - population , medicine , sex chromatin , physiology , endocrinology , biology , genetics , environmental health
The frequency of Y‐positive lymphocytes in blood smears at delivery and during early infancy was assessed to determine the exact time at which it is similar to the frequency in adults. It was found that at day 0 of life the frequency of Y‐chromatin‐positive cells was 26.6 ± 13.2% (mena ± SD); subsequently, it increased gradually to 41.2 ± 12.2 %, 49.7 ± 9.7 % and 55.4 ± 5.2 % at the 30th day, the end of the 3rd month and the end of the 4th month of life, respectively (Fig. 1). The frequency in adult males was 57.8 ± 5.8 %. This is the first time that the same infant population has been investigated in all the stages of a study.