- For each sample the estimation of neutrophils, CD4
^{+} T cells, CD8^{+} T cells, and CD56^{+} NK cells is provided, as described by Houseman et al. [31]. For each twin pair the difference in cell proportion (computed in ratios from 0 to 1, equivalent to percentages) for each cell type was computed in DIF; the purple cells indicate the *p* values from the paired *t*-test comparing differences. The sum of all ratios for a sample may differ from 1 due to rounding in the table; the analysis was performed without rounding