References in periodicals archive ?
The case of virus classification illuminates many features of categorizing difficulties and the strategies used to control them.
This definition and its use in virus classification has been the subject of much discussion in the literature, and its application to newly described viruses is often difficult because of incomplete descriptive information about the new virus and other viruses in the group to which it is related (26,27).
It comprised the viruses D/VI2223/2004, D/VI2273/2004, and D/ PN 11/2004, although the last viruscould be sequenced only in the 5'-noncoding region (the tree for the 5'-noncoding region is not shown because it provides little additional information for virus classification).