Figure 3.
The intracellular uptake of peptides 1–5 and R9 by (a) adhesive cells (HeLa, CHO-K1, A549) and (b) non-adhesive Jurkat cells. Mean fluorescence intensity of the cells normalized to R9. The cells were incubated with 1 μM peptides for 2 hr and their intracellular fluorescence was measured by flow cytometry. Values are the means ± standard deviation of three independent cultures.