Figure 11.

Macrophage response to subcutaneously implanted HFIP-derived silk fibroin scaffolds in Lewis rats at the end of 12 months. Images A, C, and E are for scaffolds prepared from 6% silk fibroin solution. Images B, D, and F are for scaffolds prepared from 17% silk fibroin solution. Pore size in Images A and B is 100–200 µm, in C and D is 500–600 µm, and in E and F is 850–1000 µm. Bars = 100 µm. Solid arrows = remaining scaffolds. Blank arrows = ED1 positive cells.