Fig. 1

The characterization of PTX-PEG-PLA-NP and PTX-PEG-PLA-FA-NP. Notes: (a) HNMR (Nuclear Magnetic Resonance) image of PEG-PLA-NP; (b) HNMR image showed that PEG-PLA-FA-NP owned an obvious peak at 2.60 ppm, which indicated that FA was linked to PEG-PLA-NP; (c/d) Particles size distribution pattern of PTX-PEG-PLA-NP and PTX-PEG-PLA-FA-NP; (e) Particles sizes of two kinds of nano-carriers; (f) TEM images of PTX-NP, which was well separated, spherical in shape and with smooth surface