| 2D | two-dimensional |
| 3D | three-dimensional |
| Å | Ångström |
| cryoEM | cryogenic electron microscopy |
| CTF | contrast transfer function |
| e− | electron |
| eV | electronvolt |
| Fmax | maximum Feret diameter |
| kV | kilovolt |
| SPA | single particle analysis |
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