Figure 6.

Cellular uptake of coumarin 6-loaded poly(l-γ-glutamylglutamine)-paclitaxel nanoparticles at (A) different concentrations incubated at 37°C for 4 hours, and (B) for different incubation periods of time at 5 mg poly(l-γ-glutamylglutamine)-paclitaxel per mL. Cell-associated fluorescence was measured at the excitation and emission wavelengths of 430 and 485 nm, respectively.

Note: Results are expressed as the mean of three independent experiments ± standard deviation (n = 3–4).