Fig. 7From: Exosomes derived from human umbilical cord blood mesenchymal stem cells stimulate regenerative wound healing via transforming growth factor-β receptor inhibitionUCB-MSC-exo inhibit TGFBR2 and TGFBR1 expression in wound healing in rats. A IF staining of TGFBR2 and TGFBR1 in the wound healing skin. B, C mRNA levels of TGFBR2 and TGFBR1 in the healing skin; scale bar = 300 μm; *p < 0.05; **p < 0.01; ***p < 0.001; means ± SD; n = 3Back to article page