AIM: To investigate the effects of Bevacizumab on the proliferation and the expression of E-Cadherin and fibronectin in human retinal pigment epithelial cell( ARPE-19) in vitro.METHODS: Different concentrations( 0,0. 625,1. 25,2. 5,5. 0m g / m L) of bevacizum ab were exposed to ARPE-19 cells,then cell viability was analyzed by CCK-8,cell cycle was determ ined by flowcytom etry, and the expression of E-Cadherin and fibornectin was detected by Western blot and RT-PCR.RESULTS: The concentration as 2. 5mg /m L ...