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(A–E) Cytotoxic effect of EV on Caco-2 cells as displayed by the RTCA DP instrument. Cells were seeded overnight to reach the log phase, (A) then incubated with 1.58 μM FGF7, (B) media only, (C) 3.26 μM EV, (D) 6.52 μM EV, or (E) 13.04 μM EV. The IC50 value of EV was found to be 9.65 ± 1.42 μM after 96 h incubation time.
