Fig.4.

Wound healing activity of the polycaprolactone (PCL) membrane embedded with ZnO NPs. First day (a, f, k and p), on 5^th day (b, g, l and q), on 10^th day (c, h, m and r), on 20^th day (d, I, n and s) and on 30^th day (e, j, o and t) of implantation. The first column (a–e) indicates neat PCL membranes, the second column (f–j) indicates PCL membrane incorporated with 1 wt% ZnO nanoparticles, the third column (k–o) indicates povidone-iodine treated wounds (positive controls) and the fourth column (p–t) indicates negative controls. Reproduced with permission from [44]