FIG. 5.

Regulation of 2′-5′ OAS activity in MHV A59- and VV-infected cells. HeLa MHVR cells were infected with the viruses as indicated above each lane. Equal amounts of total RNA from cells at 6 hpi were analyzed by formaldehyde agarose gel electrophoresis and visualized by ethidium bromide staining. The positions of 18S and 28S rRNAs are indicated.