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Analysis of X-ray background noise in the collected images. Close-up image and profile of background noise obtained from (a) glucose isomerase and (b) lysozyme. The profile was obtained from the beam stopper to 2.2 Å resolution. Blue and red lines in the profile are indicated in dot-line in the left image. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
