Figure 1: (a) Control mice () and mice after CCAO () were subjected to latex perfusion for visualization of the collateral vessel network. Red arrows indicate the ipsilateral ACA. (b) Quantification of the external vessel diameters (* versus control mice). (c) Gene expression analyses of the PDGF-βR, VEGFR2, PDGF- and VEGF-ligands, and receptor-targeting PTPs in the ACA (). PCA: posterior cerebral artery, PComA: posterior communicating artery, MCA: middle cerebral artery, and ACA: anterior cerebral artery.