a group of red and black cells on a blue background

HIV-1 Virus Particles Transmission electron micrograph of HIV-1 virus particles (colorized red) replicating from an HIV-infected H9 T-cell (blue). Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland. Credit: NIAID https://www.flickr.com/photos/niaid/52955756878/