Figure 2. Correlations between IL-8 and the numerical areal densities of lymphocytes (Spearman's coefficent r). Upper left: correlation between IL-8 and the numerical areal density of CD45+ cells (r = 0.53; p = 0.002); upper right: correlation between IL-8 and the numerical areal density of CD3+ cells (r = 0.58; p = 0.002); lower left: correlation between IL-8 and the numerical areal density of CD4+ cells (r = 0.46; p = 0.009); lower right: correlation between IL-8 and the numerical areal density of CD8+ cells (r = 0.58; p = 0.001). Numerical areal density, N_A.