Fig. 5

Wound healing assays were constructed on the back skin of each mouse in the six groups. A–C Representative digital pictures were collected at Day 0, 3, 7, 10 and 14 in the wound healing process and its statistical data, minor ticks’ interval: 1 mm. D H&E staining. E Masson staining images of skin sections of the six groups at Day 14. Scale bar: 200 μm. F qPCR results of the relative miR-21-5p level in the tissues of the six groups at Day 14. *p < 0.001