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Attachment, viability, and osteogenic differentiation of live mammalian cells in scCO2 foamed PDLLA scaffolds. Live and spreading cells were observed on the scaffolds by using LIVE/DEAD staining of live (green) cells (a) and SEM (b). (c) Functionality of the attached cells was highlighted by osteogenic differentiation of incorporated C2C12 cells as indicated by areas of red-stained AP-active cells (arrow) over the white polymer scaffold material (control scaffold shown in Inset).
