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. Scale bar indicates 100 nm. 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