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PF-4var/CXCL4L1 promotes transcellular electrical resistance (TER) in human retinal microvascular endothelial cells (HRMEC). Monolayers of HRMEC were treated with 50 ng/mL VEGF or 50 ng/mL VEGF in combination with 50 ng/mL PF-4var/CXCL4L1, and changes in TER were monitored. Experiments were repeated two times in triplicate. *P < 0.05 versus control, n = 6.
