| Characteristics | Plaques: <0.1mm, veiled. Stable in broth over 4-5 years.
 Head contains inner protein cylinder.
 Virulent, contaminates easily other cultures.
 Very large genome (280.4 kbp, 483 ORFs).
 http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=169683
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