> has been imaged before Last year, Aricescu’s team used cryo-EM to map the protein to 2.5 ångströms. But with the new kit, the researchers attained a 1.7-ångs

> has been imaged before Last year, Aricescu’s team used cryo-EM to map the protein to 2.5 ångströms. But with the new kit, the researchers attained a 1.7-ångström resolution, with even better resolution in some key parts of the protein. “It was like peeling off a blur over your eyes,” Aricescu says. “At this resolution, every half ångström opens up a whole universe.”