Small Protein Scaffold (IMAGE) University of California - Los Angeles Caption A series of cryo-EM images. The greyscale photos represent 2D projections of multiple views of the imaging scaffold attached to a target protein; the color image illustrates the 3D reconstruction derived from 2D projections. Credit Roger Castells-Graells/UCLA Usage Restrictions Cite credit with use. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.