Physicochemical
RNA
|
|
|
|
(S)
|
|
|
|
|
|
|
|
|
(S)
|
|
(S)
|
|
| Stability of Infectivity (effects) |
|
50%, 4dC, 24 hr.
|
5.5 dex
|
8.3 dex
|
|
|
|
0.1-0.3%
|
3.5 dex
|
8.5 dex
|
1 M MgCl2, 25/C, 6 days; virus titer reduced to 0 (8)
|
|
| Virion Morphology |
Spherical, slightly polygonal
|
About 37 + 2 nm
|
nm
|
nm
|
Electron microscopy (7)
|
Envelope bilayer thickness = 6 nm
|
|
|
| Morphogenesis |
|
|
|
|
|
|
| Hemagglutination |
Yes
|
SMB ext. by sucrose-acetone; pig embryo cell culture, CAF ext.
by borate-saline, pH 9.0
|
Goose
|
6.6-7.0
|
6.8
|
|
4dC
|
|
HI, CF, NT, agar gel precipitation
|
|
| |
