Figure 4.
SEM images of sample surface morphology before (a) WE42, (b) WE42-MAO, and (c) WE42-MAO/PLLA and after (d) WE42, (e) WE42-MAO, and (f) WE42-MAO/PLLA were submerged in Hank's solution at 37°C (pH = 7.4) [57].
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