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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Curr Top Med Chem. 2015;15(12):1138–1152. doi: 10.2174/1568026615666150413153400

Fig. (1).

Fig. (1)

(A) Fluorescently labeled “always-on” S6 aptamer (for A549 targeting) for fluorescence imaging in A549 xenografts. Adapted with penni ssion from reference [30]. (B) The use of S6 aptamer-Au@Ag/Au nanoparticle based AAP for fluorescence imaging in A549 xenografts. Better tumor-to-background ratio was witnessed compared with directly labeled S6 aptamer. Adapted with petmission from reference [48].