The rheological properties of gels, (A) storage and loss modulus as a function of angular frequency for the gels; (B) recovery of the gel, which was first subjected to a large strain of 50% for 130s and then the recovery was probed at the strain of 0.1% and frequency of 1 rad/s; (C) the release profile of DOX-loaded gel in different media, the data were expressed as mean ± standard deviation (n=3); (D) images of blank gel after subcutaneous injection (a), DOX-loaded gel injected in tumor (b). All the gels were measured at 25 oC. G1 and G2 were blank gels with the gelator concentration of 10 mg/mL and 20 mg/mL in ethanol, respectively; G3 was the DOX-loaded gel with the gelator concentration of 20 mg/mL and DOX concentration of 1 mg/mL in ethanol.