Even following concentration for as long as 20 hours, the infectivity of the recombinant virus was preserved.

The strategy turned out to be successful, and the resultant recombinant viruses produced reasonably large amounts of HbsAg in infected cells.

That means the recombinant virus would never be used in Europe and North America.

This recombinant virus showed a sixty-fold increase in mutation frequency compared to HSV-1 SC16 (Table 1).

Whole wild type viruses, recombinant viruses or viral products may be generated in cell types other than their natural hosts under the right conditions.

Phenotyping of cytomegalovirus drug resistance mutations by using recombinant viruses incorporating a reporter gene.

The recombinant virus was purified and amplified by infecting two 10 cm dishes of Cre 8 cells using 100 μl lysate.

To determine whether recombinant viruses expressing multiple BTV proteins are genetically stable, each was passaged at high m.o.i.

Fifty clones of each recombinant virus were isolated and individually propagated in S.frugiperda cells.

A recombinant virus 2k/1b first identified in St. Petersburg, Russia in 1999 has been shown to have evolved between 1923 and 1956.