Fig. 4From: Bioactive glasses and electrospun composites that release cobalt to stimulate the HIF pathway for wound healing applicationsTEM-EDS analysis of the surface cross-sections of (a) 5Co-A and (b) 2Co-A particles after incubation in SBF for 21 d, and with individual spectra taken at multiple locations marked by a ★. Sections were cut perpendicular to the glass surface by FIB. Scale bar is 250 nmBack to article page