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. Author manuscript; available in PMC: 2016 Dec 14.
Published in final edited form as: J Control Release. 2015 Aug 21;220(Pt B):592–599. doi: 10.1016/j.jconrel.2015.08.033

Fig. 2.

Fig. 2

Characterizations of the DOX-loaded PLGA NPs, alginate microgels loaded with PLGA NPs and characterizations of laser-generated-focused ultrasound. (A) SEM image of the PLGA NPs (scale bar: 1 μm) (inset) and the polydispersity intensity as a function of the PLGA NPs diameter measured by dynamic light scattering (DLS). (B) SEM image (left) and size distribution (right) of alginate microgels loaded with PLGA NPs. Scale bar: 1 mm. (C) Laser scanning confocal microscopy (LSCM) image of the FITC-tagged alginate microgels’ shell; the DOX loaded PLGA NPs, and the merged image of microparticles with DOX loaded NPs. Scale bar: 100 μm.