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Effect of peptides 4, 5, and 6 on the proliferation of Vero cells. Peptides (100 µM) were dissolved in 10% DMSO, and then the peptides were two-fold serially diluted in PBS. Vero cells were treated with PBS, 1% DMSO, or indicated peptide concentrations for 3 days, followed by the CCK-8 assay.
