Figure 2From: Doxorubicin-loaded cholic acid-polyethyleneimine micelles for targeted delivery of antitumor drugs: synthesis, characterization, and evaluation of their in vitro cytotoxicityFTIR spectra and light microscope image. FTIR spectra of CA, PEI, doxorubicin, CA-PEI 3:1 blank micelles, and doxorubicin-loaded CA-PEI 3:1 micelles (a). Light microscope image of CA-PEI 3:1 micelles (b).Back to article page