Fig. 8

Visual illustration of blood and skin cell profile parameter correlations: a numbers of cytotoxic Ts lymphocytes in blood (triangles) and epidermis (squares); b numbers of Th lymphocytes in blood (triangles) and epidermis (squares) for male participants plotted against normalized age difference (BA – CA)/CA, with corresponding second order polynomial fitting curves. To help visualization blood lymphocyte relative numbers are unchanged, but all values for the skin lymphocytes are multiplied by 5. Original values are in percentage to the overall T cell counts. Note that positive age difference corresponds to the young age