Priming increases the amount of interferon mRNA in poly(rI).poly(rC)-treated L cells

Priming by mouse interferon pre-treatment resulted in an accumulation of interferon mRNA in poly(rI).poly(rC)-treated L cells, starting early in the period of interferon synthesis. On electrophoresis, the priming activity of an interferon preparation co-migrated with the antiviral activity, which suggests identity of the functional principle(s) for these activities.