We have developed an efficient, fully synthetic method and protocol called the Circular Vector method, which enables the production of circularized DNA containing expression elements that are ready for transfection in as little as 3 hours, thereby eliminating all bacterial cloning steps.

Ultraflat graphene membrane is developed here as the supporting film for cryo-EM specimen preparation, which improves the image quality of vitrified samples and enables the high-resolution reconstruction of small macromolecules (<100KD).