Physicochemical
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(S)
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(S)
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(S)
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| Stability of Infectivity (effects) |
Infectivity inactivated at pH 3.0, 3 hrs., RT
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1:20
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6.0 dex
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5.9 dex
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1:1000
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4.3 dex
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5.4 dex
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| Virion Morphology |
Bluetongue virus-like
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57-67 nm
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nm
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nm
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Electron microscopy, thin-section
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Envelope absent
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Core = 30 nm diameter
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| Morphogenesis |
Macrotubules, 20-24 nm in diam. Formed
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Intracytoplasmic inclusions
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| Hemagglutination |
No
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9th passage duck embryo cell; cell cult. harvests; tube HA tests.
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Goose
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6.0 - 7.3
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None
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37dC, 4dC
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None
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Negative results obtained with std. methods of detecting HA in
"crude" cell harvests containing arboviruses or reoviruses.
Harvests contained no serum.
* Umatilla virus was determined to be antigenically related to Lla
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PRNT
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Negative results obtained with std. methods of detecting HA in
"crude" cell harvests containing arboviruses or reoviruses.
Harvests contained no serum.
* Umatilla virus was determined to be antigenically related to Lla
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