Brainstem gliomas in childhood
Mar. 08, 2022
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This negatively stained, transmission electron microscopic image revealed Venezuelan equine encephalitis virus virions in the tissue specimen, which had been fixed using phosphotungstic acid. Phosphotungstic acid is very electron-dense and, due to electrostatic forces of attraction, clings to the capsid surface of each viral particle or virion, thereby highlighting the presence of such pathogens. Venezuelan equine encephalitis is a Togaviridae family member and a member of the genus Alphavirus. Photomicrograph by CDC/Dr. Fred Murphy and Sylvia Whitfield in 1975. (Source: Public Health Image Library, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia. Image 10266. Public domain.)