Fig. 1. (A) SEM images of sPL materials with different concentrations. (a) S1, (b) S2, (c) S3, (d) S4, (e) S5, (f) fiber diameter of different materials; (B) coaxial structure of nanospun fibers revealed by TEM; (C) porosity of loaded sPL composite scaffolds; data are expressed as mean ± SD (n = 3).***P < 0.001, ****P < 0.0001, compare to S1;^###P < 0.001, ^####P < 0.0001, compare to S2.