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Optical microscopic images (600×).
Notes: (A) Fe3O4-PLGA NPs and (B) Fe3O4-PLGA-cRGD NPs. The NPs had a regular shape and were relatively uniform in size.
Abbreviations: cRGD, cyclic Arg-Gly-Asp; NPs, nanoparticles; PLGA, poly(lactic-co-glycolic acid).
