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(a) Collagen III formation in the HDFa-containing Fmoc-FF/RGD hydrogel was not observed 14 days post culture (blue: cell nuclei; green: collagen III). (b) Elongated HDFa cells in the Fmoc-FF/RGD hydrogel 7 days post culture showed no expression of α-smooth muscle actin (blue: cell nuclei; green: F-actins; red: α-smooth muscle actins). Scale bars: 50 µm.
