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SEM of hUCMSC attachment on scaffolds. (A) hUCMSC attachment on rigid CPC construct at 1 d. (B) and (C) hUCMSC anchorage and spreading on the non-rigid CPC-microbead-fiber construct. “C” refers to the hUCMSCs. Cells developed long cytoplasmic extensions “E” that anchored to the fibers “F”. (D) Higher magnification of cell attaching to the nano-apatite crystals in CPC. hUCMSCs attained a normal polygonal morphology.
