Acidic Tumor pH-Responsive Nanophotomedicine for Targeted Photodynamic Cancer Therapy

Figure 4

pH-responsive physical property changes of the pH-NanoPM. (a) Zeta-potential measurement of the pH-NanoPM at different pH values (pH 7.4 and 6.5). (b) Quantitative measurement of exposed amine groups in different pH values as determined by fluorescamine assay (pH 7.4 and 6.5).

(a)

(b)