Physicochemical 
                RNA, Single Strand
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                3
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                (S)
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                (S)
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                (S)
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            | Stability of Infectivity (effects) | 
        
        
            
                 
                
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                20%
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                1.0 dex
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                5.9 dex (2)
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            | Virion Morphology | 
        
        
            
                 
                
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                nm
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                nm
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            | Morphogenesis | 
        
        
            
                 
                
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            | Hemagglutination | 
        
        
            
                 
                Yes
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                SMB ext. by sucrose-acetone + sonication
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                Various (3)
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                6.0-6.8
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                6.0 (3)
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                Not dependent
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                Trypsin treatment of erythrocytes enhances agglutination (3)
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                CF, NT, HI
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                Trypsin treatment of erythrocytes enhances agglutination (3)
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