Fig. 4.

(a) Schematic illustration of the preparation of PEGylated HA-GVs (PH-GVs). (b) US images of GVs, HA-GVs and PH-GVs in tumour sites upon intravenous injection with different formulations and (c) their respective quantitative intensity. (d) Schematic showing the preparation and PTT of FA-CS-GO. (e) In vivo PA images of tumour tissue before and after the introduction of FA-CS-GO under 532, 532–1000 and 625–1000 nm scanning. White dash lines indicating the tumour area. Scale bar = 2 mm. Reprinted from [81], [83] with permission from Elsevier.