Fig. 2. (a) Particle size distribution and TEM image of TQ/DOX–PEG–mAb. Scare bar = 500 nm. (b) UV-Vis spectrum of TQ/DOX–PEG, TQ and DOX. Cumulative release of (c) TQ and (d) DOX from TQ/DOX–PEG–mAb under different pH conditions (pH 5.0, 6.5 and 7.4) in 48 h. (e) Zeta potential changes of TQ/DOX–PEG–mAb after incubation with different pHs (pH 5.0, 6.5 and 7.4). (f) In vitro stability of TQ/DOX–PEG–mAb in H2O, 5% glucose and RPMI 1640 containing 10% FBS during 7 days.
