20210212-covid.jpg

A CCL-81 cell (green) infected with SARS-CoV-2 virus particles, which are the small spherical structures (teal). The string-like protrusions extending from the cell are cell projections or pseudopodium, whose primary purposes are cell mobility and ingestion of nutrients. Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland.