Skip to main content
. 2019 May 21;6(14):1802001. doi: 10.1002/advs.201802001

Figure 4.

Figure 4

a) US images in B‐mode and contrast mode of water, ICG@HMOP‐PEG, and ICG/PFP@HMOP‐PEG before and after NIR irradiation. b) PA images of water and ICG/PFP@HMOP‐PEG suspensions at various concentrations (2, 5, 10, and 20 mg mL−1) after NIR irradiation. c) Quantitative analysis of the corresponding average gray values in (a). d) Quantitative analysis of the relationship between the PA signal intensity and the concentration of ICG in (b). e) Confocal fluorescence images of MDA‐MB‐231 cells incubated with FITC‐conjugated ICG@HMOP‐PEG and ICG/PFP@HMOP‐PEG, without or with NIR laser irradiation. Scale bar: 50 µm. f) Flow cytometry analysis and g) FITC intensity values for the uptake of FITC ‐labeled ICG@HMOP‐PEG and ICG/PFP@HMOP‐PEG. h) Bio‐TEM images of MDA‐MB‐231 cells incubated with ICG@HMOP‐PEG and ICG/PFP@HMOP‐PEG with or without laser irradiation.