Physicochemical 
                
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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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                1.0%
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                <1.0 dex
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                3.7 dex
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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 | 
        
        
            
                 
                No
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                SMB ext. by sucrose-acetone
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                Goose**
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                SMB tr. by alk. aqueous extraction with and without protamine
              treatment also tested for HA. 
**  Others used for HA detection included human O, chicken, guinea pig, mouse, 
     rat and sheep.
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                CF
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                SMB tr. by alk. aqueous extraction with and without protamine
              treatment also tested for HA. 
**  Others used for HA detection included human O, chicken, guinea pig, mouse, 
     rat and sheep.
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