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Ultrastructural features exhibited by gut cells of an Aedes triseriatus mosquito infected with Eastern equine encephalitis virus

In this transmission electron microscopic image, note the numerous Eastern equine encephalitis virions in various stages of development, from the precursor particles through the mature virus. Image by CDC, 1969. (Source: Public Health Image Library, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia. Image 17438. Public domain.)