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Proliferation of AD-MSCs Engineered with MCNP-PEI/Plasmid Complexes. A) The proliferation of unengineered (control) and engineered (MCNP-PEI/plasmid) AD-MSCs was evaluated using Ki-67 (red). The nuclei were stained with Hoechst (blue). Scale bar = 50 µm. B) Approximately 20% of the AD-MSCS expressed Ki-67 and there was no statistically significant difference between the two groups (p > 0.05).
