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. Author manuscript; available in PMC: 2017 Apr 26.
Published in final edited form as: ACS Nano. 2016 Apr 8;10(4):3918–3935. doi: 10.1021/acsnano.6b01401

Figure 1.

Figure 1

(a) Schematic of REs showing the lanthanide-doped core surrounded by an undoped shell. (b) TEM images of REs reveal spherical morphology. (c) Nanoprobe clearance visualized in mice 15 min post injection using X-IR imaging. (d) X-IR imaging of axillary and brachial lymph nodes. Reproduced with permission from [65]. Copyright 2015 American Chemical Society.