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Matrix formation by hMSCs on HAbind/E3-PCL scaffolds after 42 days of culture. Histological sections are incubated with primary antibodies that bind to collagen (A) I, (B) II and (C) X, followed by a secondary antibody fluorescently tagged with Alexa Fluor 488 (green). Cell nuclei are labeled using Hoescht Dye (blue).
