Physical Absorption of Folic Acid and Chitosan on Dihydroartemisinin-Loaded Poly-Lactic-Co-Glycolic Acid Nanoparticles via Electrostatic Interaction for Their Enhanced Uptake and Anticancer Effect

Figure 4

Physicochemical characteristics: (a) UV-VIS spectrometry, (b) in vitro release studies, (c) FTIR (Fourier-transform infrared) spectroscopy, and (d) X-ray diffraction (XRD).

(a)

(b)

(c)

(d)