Abstract
The study of host-pathogen interactions over past decades has benefited from advances in microscopy and fluorescent imaging techniques. A particularly powerful model in this field is vaccinia virus (VACV), which due to its amenability to genetic manipulation has been a productive model in advancing the understanding of the transport of subcellular cargoes. Conventional light microscopy imposes an upper limit of resolution of ~250nm, hence knowledge of events occurring at the sub-viral resolution is based predominantly on studies utilising electron microscopy. The development of super-resolution light microscopy presents the opportunity to bridge the gap between these two technologies. This report describes the analysis of VACV replication using fluorescent recombinant viruses, achieving sub-viral resolution with three-dimensional structured illumination microscopy. This is the first report of successfully resolving poxvirus particle morphologies at the scale of single virus particles using light microscopy.
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