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. 2021 Jan 21;9:629796. doi: 10.3389/fcell.2021.629796

FIGURE 2.

FIGURE 2

Morphology of the biomimetic scaffold and cylindrical tube. Macro-morphology of the biomimetic scaffold (A) and cylindrical tube (B). Micro-morphology of the biomimetic scaffold (B–C) and cylindrical tube (E–F) as observed by SEM. The green arrow indicates the collagen region, and the yellow arrow indicates the PCL region.