The transition in frequency of Y-chromatin in males during early infancy
| Autor: | D. Aravantinos, E. Lyberatou‐Moraitou, C. Lyberatos, G. S. Kourounis, P. Grigori‐Kostaraki, D. Kaskarelis |
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| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Sex Determination Analysis education.field_of_study Transition (genetics) Population Age Factors Infant Newborn Infant Physiology Biology Early infancy Sex chromatin Chromatin Blood smear Sex Chromatin Reference Values Reference values Genetics Humans Female Lymphocytes education Genetics (clinical) |
| Zdroj: | Clinical Genetics. 20:416-418 |
| ISSN: | 1399-0004 0009-9163 |
| Popis: | 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% (mean +/- 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 4 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. |
| Databáze: | OpenAIRE |
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