If a cell happens to be infected by two different virus strains at the same time, there will be a mix of RNA segments from both strains.
Hepatitis A, B and C are caused by three different viruses, often abbreviated HAV, HBV and HCV.
Four distinct clinical problems caused by four different viruses allow exploration of the problems associated with each disease.
The relevance of spatial information has been highlighted by Snijder et al. 75, who studied HeLa cells infected by five different viruses, and showed that the cell's position in a culture determines the activity of some pathways, such as focal adhesion kinase, which in turn determines the susceptibility to viruses.
Twenty nine ESTs grouped in 12 clusters, found exclusively in the salivary gland library, match viral proteins encoded by at least two different viruses, one of which had its genome recently sequenced [ 34, 36].
The analysis suggests that there are two different viruses.
At Emory, the pause has halted not only the CEIRS project with the lab-attenuated PR8 strain, but also a research grant project headed by Anice Lowen that is looking at how the cell types targeted by two different influenza viruses affect their propensity to exchange genes.
The more similar the sequences of genetic letters in two viruses, the more recently they diverged from a common ancestor.Quite early on in the examination of the HIV family tree it became apparent that there are two different forms of AIDS, caused by two different (though related) viruses.
Attachment of viruses to NIH3T3 cells was assessed by two different methods: i) Virus suspensions were incubated with NIH3T3 cells for one hour at 37°C.
