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(A) Schematic drawing of the fabrication of villus-like microstructured PEGDA-AA hydrogel scaffolds. (B) Left: bright field microscope image of the cross-section of the villus-like microstructured hydrogel scaffolds. Right: confocal maximum intensity projection showing F-actin and nuclei staining of Caco-2 cells grown on top of the villus-like scaffold. Scale bars: 100 μm.
