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Cellular uptake of cyclic peptides with disulfide bond on EBC-1 cells. Peptides were applied in 1, 5, and 10 μM concentrations in 90 min treatment. Flow cytometry was used to determine the fluorescence intensity of the cells. The fluorescence intensity is relative to Cf-R8 at 10 μM (100%). Data represent the mean ± standard deviation (SD).
