Fig. 5.

In vivo wound healing evaluation with diabetic mice. a) Schematic illustration of intelligent microneedle patch treatment in vivo. b) Representative photographic images of the diabetic wounds with different treatments after 0, 3, 5, 7, 10, 12 and 14 days, respectively. MN-MgH₂ was not removed until it came off naturally on day 10. c) Quantification of wounded area healing rate in each group. n = 3, *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001.