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Confocal images of HUVECs cultured on the two collagen films. (A) Confocal images of HUVECs cultured on the collagen film (non-treatment group). (B) Confocal images of HUVECs cultured on the collagenase-treated collagen film (treatment group). Circular plots of the migration angle and number of HUVECs for the non-treatment group (C) and treatment group (D). Scale bar = 100 μm.
