Dr Johnson is head of the Electron Microscopy Facility at the Sir William Dunn School of Pathology at the University of Oxford. Her background includes post-doctoral research in plant cell biology at the Umeå Plant Science Centre in Sweden and several years as an electron microscopist with the Australian Centre for Microscopy and Microanalysis. She has been running the Dunn School EM Facility since 2012. During this time, she has significantly developed her capabilities in biological EM sample preparation, volume EM, cryo-EM, and correlative light and electron microscopy (CLEM). Dr Johnson collaborates on diverse research projects from across Oxford, spanning the areas of biophysics, structural biology, microbiology, cell biology, biomedicine and plant biology. She is actively involved in the volume EM community. She is a specialist in biological specimen preparation for EM, with a particular research interest in the optimisation of sample preparation workflows for volume EM, as well as for correlative microscopy and microanalysis of biological samples.