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Biocompatibility of dECM@exo. A Immunofluorescence microscopy of Ki67 in NPCs. B Quantitative detection of the proportion of cells expressing Ki67. **P < 0.01, *P < 0.05. C Cell viability of cells cultured with dECM or dECM@exo. D The absorbance at 450 nm was compared among the groups. E Fluorescence images of living (green) and dead (red) cells in each group. Scale bar = 100 μm. F Quantification of the percentage of living cells
