Astragalus polysaccharide attenuates rat experimental colitis by inducing regulatory T cells in intestinal Peyer’s patches

Figure 2 Representative histological images and injury scores. A: Representative histological images stained with HE. F1: Normal; F2: TNBS; F3: TNBS + APS; F4: TNBS + MES. Bar = 100 μm. B: Macroscopic scores. C: Histological scores. Data are mean ± SEM (n = 8). ^eP < 0.001, ^fP < 0.0001 vs Normal group; ^aP < 0.05, ^bP < 0.01, ^cP < 0.0001 vs TNBS group. TNBS: 2,4,6-trinitrobenzene sulfonic acid; APS: Astragalus polysaccharide; MES: Mesalazine.