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X-ray crystallography https:/dotorg/10,1 107/509074449020001 36 1. Preparing a protein crystal crywals. Acta Cryst. D58: 456-8. 2002, Fig.18. 0 2002 WC (https://journals.Jucr.org/). 2. Exposing the crystal to a source of x-rays Elis et al, Resolution improvement from "in situ annealing' of copper nitrite reductase Credit: Reproduced with permission of the International Union of Crystallography, from 3. Detecting the diffraction of the x-ray by the crystal 4. Interpret the diffraction pattern into an electron density map Detector 1 Macmillan Learning Protein crystal (B) (2 4 Macmillan Learning X-ray Interpretation of X-ray beam diffraction pattern source 3 Electron density map Diffracted beams 16