Fig. 1From: HA-coated collagen nanofibers for urethral regeneration via in situ polarization of M2 macrophages Surface nano-topography and chemistry distribution. A Representative SEM micrographs of collagen and HA-collagen nanofibrous films. Scale bars: 1 μm. B Statistical data of nanofiber mean diameter of each nanofiber sample. n = 70, *p < 0.05. (C) EDX spectra examination of the surface of collagen and HA-collagen nanofibersBack to article page