Fig. 3

Effects of pH (a) and serum % (b) of the culture media on the cellular uptake of OL peptide. RFU relative florescence units; *p < 0.05. FAM-OL peptide was added at 10 µg/mL and 0.1% DMSO was used as baseline control (N = 3 biological replicates/group pooled from two independent experiments were used for statistical analyses)