Figure 3.

Cellular uptakes of the conjugates were determined in HeLa cells by flow cytometry. TPT, L–TPT, L–QD–TPT (a) (excitation at 400 nm, emission filter FL1 (525/50 nm)); L–QD and L–QD–TPT (b) (excitation at 400 nm, emission filter FL2 (610/20 nm)).