Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
SEM images of the γ–PGA/β–TCP composite fibrous mats with different γ–PGA/β–TCP weight ratios and different cystamine treatment times: (a) 20:1, 12 h; (b) 20:1, 24 h; (c) 40:1, 12 h; and (d) 40:1, 24 h. (e) The diameter of the electrospun γ–PGA/β–TCP composite fibers (*** p < 0.005). Scale bars: 2 μm.
