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Scanning electron micrographs (×1800) of crosslinked (a, d) PCLF, (b, e) PPF/PCLF (50%), and (c, f) PPF disks before (a, b, c) and after (d, e, f) one-week incubation in cell culture medium at 37°C. The scale bar of 30 μm in (f) is applicable to all.
