The Molecular Electron Microscopy Core (MEMC) is a state-of-the-art facility dedicated to high-resolution electron cryomicroscopy and electron cryotomography. It houses three electron microscopes, a 120kV Spirit, a 200kV F20, and a 300kV Titan Krios. These microscopes are available to researchers either for direct use, or aided by MEMC personnel, to collect data aimed at high-resolution structural biology projects.