Fig. 4

MRA images on the 3rd, 7th and 14th days after pMCAO. a Representative MRA images of the Sham, the Stroke and the XSECC/Stroke groups. Anterior cerebral artery (ACA), posterior cerebral artery (PCA), middle cerebral artery (MCA) as indicated by white arrows in the Sham group. b Signal intensity of contralateral hemisphere on the 3rd, 7th and 14th days after pMCAO. Values are means ± SEM. *P < 0.05, **P < 0.01 vs the Stroke group