Immunohistochemical assay of eGFP-positive regions.

<p>A: Higher resolution of an example location. B–E: Representative immunohistochemical sections at 8 weeks post-surgery. F: Homing ability of BMSCs expressing eGFP was analyzed by quantifying eGFP-positive regions. No statistical differences were detected in eGFP expression among the various groups during the first 2 week (P > 0.05). After 4 weeks, expression in the experimental group was found to be significantly stronger than that in groups B, C and D. *<i>p</i> < 0.05, * *<i>p <</i> 0.01, <i>n</i> = 4.