Figure 4

Evaluation of tumour Treg abundance by immunofluorescence. (a) Representative identification of T helper lymphocytes (white triangles △) and Treg (white arrowheads
) by immunofluorescence staining of membranal CD4 (red) and nuclear Foxp3 (green); scale bar, 50 μm; original magnification, ×40. (b) Representative images of immunofluorescence staining of tumour samples. (c) Treg proportion expressed as the percentage of Foxp3+ cells of CD4+ cells; **p = 0.0031 vs Intact, p = 0.0070 vs Vehicle; data from 2 independent experiments are expressed as mean ± SD; n = 8.