In this video, Dr. Maria Harkiolaki, Principal Beamline Scientist at Diamond Light Source, discusses the use of X-ray microscopy to track viral replication and infection in 3D and visualize the distribution of proteins within living cells. Here, Harkiolaki highlights how her lab is currently working to identify the mechanisms and mutations of several viruses, including the herpes virus and a member of the coronavirus family, with the hopes of aiding the development of new therapies. Harkiolaki also explores her role in designing and building user-friendly microscopes for other researchers who use the Diamond Light Source facilities.