Electron microscopic images of novel Thogotovirus isolate, Bourbon virus. Filamentous virus particle with distinct surface projection are visible in culture supernatant that was fixed in 2.5% paraformaldehyde. Cropped from Figure 2a from Kosoy OI, Lambert AJ, Hawkinson DJ, et al. (2015) Novel Thogotovirus species associated with febrile illness and death, United States, 2014. "Emerging Infectious Diseases" doi:10.3201/eid2105.150150