Fig. 5.

In vivo therapeutic efficiency of PAA@MPDA-SAP NPs. (a) Experimental design of the DSS-induced mouse model. (b) IVIS imaging of mouse with DSS-induced colitis after treatments of PAA@MPDA-IR780 NPs. (c) Variations of body weight over time. (d) Colon length of mice from various groups. (e) Representative photographs of rectal areas of a healthy mouse, mini-endoscopic images and H&E-stained colonic pathological sections of colons from different mouse groups. Scale bars: 100 ​μm. Error bars represent means ​± ​SD (n ​= ​8) (∗∗∗∗p ​< ​0.0001).