Figure 5

Histological evaluation of collagen deposition at 11 and 21 days after different MSC treatments. Panels 1, 2 blue-stained collagen was clearly detectable in autologous ASC-treated areas, where collagen is arranged in thick bundles of fibres. Allogeneic ASC- (Panels 3, 4) and BM-MSC- treated wounds (Panels 5, 6) show a slightly higher blue staining density than the saline-treated wounds (Panels 7, 8). Eschar (asterisk). Mallory trichrome-staining. Scale bar 200 μm; original mag. ×100.