FIGURE 4.

Schematic of MSCs labeled with the trimodal nanobubble being injected into model. The PLGA and DiR molecular structures are shown (A). Quantification of the US, PA, and MPI signal increases after injection of labeled MSCs (B). Reproduced with permission from Lemaster et al., 2018. Copyright 2018, American Chemical Society. (Copyright permission shown in Supplementary Figure S4).