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Bacteriorhodopsin

Bacteriorhodopsin imaged with the Cypher AFM in AC mode using a short cantilever. In the original AFM image (top) missing sub-units are easily resolved (white circle) and its power spectrum shows spots outside of the 10 Angstrom circle, demonstrating sub-nanometer resolution. The lower right image is a correlation average of the original image. Imaged with the Cypher AFM.