An adaptive optics image of the double nucleus of the galaxy merger NGC 6240, taken in infrared light with the Keck II Telescope. The feature within the north nucleus labeled "North 2" is at the ...
Human cell nucleus with fluorescently labeled chromatin (green), nucleolar granular component (magenta) and nucleolar dense fibrillar component (blue). Disclaimer: AAAS and EurekAlert! are not ...
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