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Biocompatibility of cell spheres-laden hydrogel samples under different light strategies. (A) Different printing speeds and extrusion speeds affect the print quality of bioinks (B) Growth status of internal cells in single-photo source and dual-photo source sample groups, the arrows indicate cell spheres. Scale bar = 200 μm. (C) The CCK-8 results for cells inside hydrogels. (D) The morphology of the 3D bioprinted tissue containing skin organoids.
