Summary
Characteristic particles of hog cholera virus were identified by direct immuno-electron microscopy. The virion is 40–50mμ, often asymmetrically shaped, and is enveloped in a membrane that bears 12–15 mμ surface projections. The surface projections are shear-sensitive and are antigenically different from the virion's envelope. They may represent hog cholera virus “soluble antigen”.
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Ritchie, A.E., Fernelius, A.L. Direct immuno-electron microscopy and some morphological features of hog cholera virus. Archiv f Virusforschung 23, 292–298 (1968). https://doi.org/10.1007/BF01241903
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DOI: https://doi.org/10.1007/BF01241903