Expression of FasR, Fas-L and Bcl-2 in CD4+ and CD8+ subpopulations of T lymphocytes in the cord blood of healthy full-term newborns, is gender of influence?

Purpose: The expression of FasR, Fas-L and Bcl-2 on CD4 + and CD8 + T lymphocytes subpopulations from the cord blood were assayed. The results in blood from boys and girls were analyses separately and compared. Material and Methods: Twenty four full-term newborns: 13 females and 11 males were included into the study. Blood from the umbilical vein was collected immediately after cutting the umbilical cord. The staining with monoclonal antibodies against CD4, CD8, FasR, Fas-L and Bcl-2 was performed within 2 hours after collection and followed with flow cytometry acquisition and analysis. Results: The percentage of CD4