Abnormal expression of miRNA-122 in cerebral infarction and related mechanism of regulating vascular endothelial cell proliferation and apoptosis by targeting CCNG1 Xiao-Juan Yu; Tian Zhang; Zeng-Zhen Wei; Bin Gu; Ting Guo; Wen-Juan Jiang; Yue-Qin Shen; Dong Wang; Qian Wang; Jun Wang;