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Loading video... VIDEO: Subunits B (blue), B-1 (cyan), and B-2 (gray) depicted as ribbon diagrams. Initially bound to B-1, subunit B unflattens, straining contact between subunits until they separate. The resulting loose lateral... view more  Credit: Vilmos Zsolnay, University of Chicago. Our cells are filled with 'bones,' in a sense. Thin, flexible protein strands called actin filaments help support and move around the bulk of the cells of eukaryotes, which includes all plants and animals. Always on the go, actin filaments constantly grow, shrink, bind with other things, and branch of...

Transmission Electron Microscopy (TEM) is a high-resolution imaging method that supplies information regarding the morphology and structure of specimens. In order to penetrate samples, it utilizes a high energy electron beam and renders images using the transmitted part of the beam. As highly accelerated electrons have a small wavelength, they can be employed to resolve small features. This capability is critical in nanotechnology, structural biology, and material science studies. The sample to be imaged must be placed on a special metal grid, which is usually covered with ultra-thin (2-5 nm)...