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. Author manuscript; available in PMC: 2020 Mar 9.
Published in final edited form as: Nat Catal. 2019 Sep 9;2(10):864–872. doi: 10.1038/s41929-019-0333-4

Figure 1. Preparation and characterization of Pd-functionalised exosomes.

Figure 1

(a) Overview of the step-wise protocol to generate Pd-ExoA549 from A549 cells. (b) Representative TEM images of ExoA549 and Pd-ExoA549 at different magnifications. (c) Representative cryo-TEM images of Pd-ExoA549 at two magnifications. (d) HRSTEM-HAADF image of a representative Pd-ExoA459. (e) HRSTEM-HAADF zoomed-in image showing highly-crystalline Pd nanostructures with a lattice spacing of 0.23 nm, which correspond to Pd (1 1 1)-surfaces. Inset shows the FFT spectrum generated from the image. (f) Western blots of exosome-specific biomarkers ALIX, CD63, CD81 and CD9 of ExoA549 and Pd-ExoA549.