Figure 1: Characteristics of the DDMC-paclitaxel complex. A) Scanning electron microscopic image (HITACHI S-4800) of the freeze-dried DDMCpaclitaxel complex taken at an accelerating voltage of 5 kV. B) Differential scanning calorimetry (DSC) with DDMC-paclitaxel complex and paclitaxel: 1) DDMC, 2) DDMC/PTX complex (DDMC 9.6 mg/PTX 0.385 mg), 3) DDMC/ PTX complex (DDMC 9.6 mg/PTX 0.709 mg), and 4) PTX. C) IR absorption spectra of the DDMC-paclitaxel complex and paclitaxel: 1) DDMC, 2) DDMC/ PTX complex (DDMC 9.6 mg/PTX 0.385 mg), 3) DDMC/PTX complex (DDMC 9.6 mg/PTX 0.709 mg), and 4) PTX.