Fig. 5

Cell-coated hydrogel units and assembly with channel. a, b Side view (a) and top view (b) of a cell-coated hydrogel unit. Insets show the magnified view of the hydrogel unit and we verified that Caco-2 cells were well attached on the surface of villi structures and basal part. c Top view of cell-coated hydrogel units assembled in a fluidic channel. In vivo-like 3D cell culture environment under controllable fluidic conditions has been developed. Scale bars 500 and 100 μm for inset