CXCL12 and stroke disorder: Posthoc analyses revealed that the SDF-1α level of the infarcted cortex of stroke rats in 24h group significantly increased compared to the infarcted cortex of rats in control group and the contralateral intact cortex of stroke rats in 24h group and control group at 7 days after MCAO (24h group: infarcted cortex 0.29±0.052, intact cortex 0.18±0.002; control group: infarcted cortex 0.18±0.004, intact cortex 0.19±0.004 ng/ml, respectively, p value<0.05, Fig 7C and S5 Data).