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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Radiother Oncol. 2018 Jun 29;129(3):589–594. doi: 10.1016/j.radonc.2018.06.016

Fig. 1.

Fig. 1.

Inverted microscope image of the LuPO4:Pr3+ NPs in HFF1 cell culture at 100× magnification (a) (contrast and saturation was adjusted for clarification). The “bright dots” in the picture are the NPs. TEM image of the LuPO4:Pr3+ NPs at magnification of 15500× (b) and 52000× (c). The NPs show a smooth surface and a spherical shape. Some agglomerations were detected.