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Synthesis scheme and TEM imaging. (A) Schematic illustration of Pd@Pt nanoparticles formation. (B, C) TEM images of Pd@Pt nanoparticles, with a mean diameter of 35 nm. (D) TEM image of E. coli O157:H7 captured by antibody-modified Pd@Pt nanoparticle conjugations. (E) TEM image of S. Enteritidis captured by antibody-modified Pd@Pt nanoparticle conjugations. (F, G) TEM images of details for the recognition function of antibodies-modified Pd@Pt nanoparticle conjugations.
