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Hematological parameters by age.: A: Lymphocyte count; B: Lymphocyte Count, Single outlier excluded; C: Haemopoetic Stem Cells; D: Haemopoetic Stem Cells with ellipses at 95% confidence intervals ; E: Endothelial progenitor cells (EPC's); F: EPC's with two outliers excluded and C.I. Ellipses.
