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HE and immunofluorescence of MTs in the bioprinted 3D structure. HE staining revealed that MTs could largely sustain their morphology after the bioprinting process (A). Immunofluorescence confirmed induced MTs still had expression of α-SMA (B) and smoothelin (C). Red, α-SMA; green, smoothelin; blue, DAPI; inset bar = 200 μm.
