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Different morphologies of SMMC7721 cells cultured in Matrigel, collagen-I and RADA16-I hydrogels. A. Light microscopy images of cells encapsulated in Matrigel, collagen-I and RADA16-I hydrogels for 3 day. B. F-actin (red) and nuclear (blue) fluorescence images of the morphology in Matrigel, collagen-I and RADA16-I for 3 day.
