IL17A and pneumocystosis: However, flow cytometry data showed the significant increase of IL-17-producing B cells (16.9 ± 1.5 vs 6.7 ± 1.2%, P < 0.01, Figure 4(a)), macrophages (58.5 ± 2.4 vs 39.5 ± 1.9%, P < 0.01, Figure 4(b)), and T cells (8.5 ± 0.2 vs 4.4 ± 0.1%, P < 0.01, Figure 4(c)) in the lung from IL-17–/– PCP mice than those from WT PCP mice.