Colorized scanning electron micrograph of CCL-81 Cells infected with SARS-CoV-2 virus particles (green), isolated from a patient sample. The tentacle-like protrusions from the cells are filapodia, which extend from infected cells, attach to neighboring cells, and promote viral infection as a transport system for virus particles (image captured at the National Institute of Allergy and Infectious Diseases (NIAID) Integrated Research Facility in Fort Detrick, Maryland, USA; image modified by MIC). The cover is published under the Creative Commons Attribution (CC BY) license.