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Schematic illustration of the group setting and the materials used in this study. Briefly, the biomaterials, collagen-DNA and Matrigel, were compared with the configurations of beads and bulk and with exogenous NPCs loaded or not in the transplantation of SCI. Moreover, the exogenous cells, preorganized (i.e., cerebral organoids) or unorganized (i.e., cell-laden hydrogel), were compared as well in this study.
