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SEM images of micro-carrier (A–C) and hMSC/micro-carrier after dynamic in vitro cell cultured for 60 days (E–H) [surface (A, B, D) and X-section (C, E, F)], [(A; × 500), (B, D, F; × 1000) (C; × 3000), (F; × 5000)]. The red arrows indicated the proliferated cells on the pore surface
