FIG. 7.

Primer extension analysis of RNAs from the two-round induction experiment. Equivalent amounts of total cellular RNAs isolated at each time point in Fig. 6 were analyzed by primer extension with an RNA1-specific primer as described in the legend to Fig. 2. An autoradiograph of the sequencing gel is shown. The position of the primer extension product that corresponds to capped RNA1 (which migrates as 1 nt longer than the predicted size for the product from uncapped FHV RNA1) is indicated; the sequence of the 5′ terminus of RNA1 is shown.