When you are done with that assay (if you used the correct one!), you find that the titer of the stock is 1.2 x 107 PFU/ml. What are two possible reasons why this number does not match your electron microscopy number? 

Which of the following features is true of all picornavirus virions ?

In what major way does the replication of a – strand RNA virus differ from that of a + strand RNA virus, and what key enzyme is required?

Why do influenza viruses require packaging of their RNA-dependent RNA polymerase? 

Noroviruses are unique in their ability to exploit commensal bacteria to stimulate their infection along the intestinal tract.

Plus strand RNA retrovirus replication is unique from conventional plus strand RNA virus replication because it utilizes the unique enzyme:

An ELISA is typically used in virus diagnostics to capture and detect which two of these from serum?  

Which of the following mechanisms are used by certain picornaviruses for entry into target cells ?

What is the mechanism of action of amantadine? 

You have sera from 3 people that you believe to be infected with influenza virus, and you would like to know the relative titer of virus in each person. These are the results of your hemagglutination assay.  Which patient has the highest titer of virus?