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Schematic of prevascularized stem cell patch. A) Illustration of 3D cell printing system, and B) macroscopic view of the printer. C) Illustration of prevascularized stem cell patch including multiple cell-laden bioinks and supporting PCL polymer. D) Fabricated patch including the two types of cell-laden bioink and PCL supporting layer [Scale bar (top left), 1 mm; Scale bar (bottom), 200 μm]. All bioinks were composed of cECM. Reproduced with permission.[123] Copyright 2017, Elsevier.
