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Figure 3
Distribution of [Gd@C82(OH)22]n in the macrophage. (a) Quantitative distribution of [Gd@C82(OH)22]n in a 50 nm thick slice. (b) Distribution of [Gd@C82(OH)22]n in a projection perpendicular to the beam direction. (c) XRF of the same cell mapping Gd. The exact three-dimensional location of [Gd@C82(OH)22]n can be determined in (a). Furthermore, the high spatial resolution in (a) avoids the ambiguity in (c), which is caused by the low spatial resolution and self-absorption of fluorescence signals (scale bar 2.0 µm).

IUCrJ
Volume 5| Part 2| March 2018| Pages 141-149
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517017912