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Figure 1
Exemplary micrographs with respective CTF estimations. (a) A micrograph acquired with liquid-nitrogen cooling, with an estimated defocus of 1.05 µm. The CTF goes out to 2.5 Å (white ring). (b) A micrograph acquired with liquid-helium cooling, with an estimated defocus of 1.99 µm. The CTF goes out to 2.6 Å (white ring).

IUCrJ
Volume 6| Part 6| November 2019| Pages 1099-1105
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519011503