Figure 6.
In vitro assays with dsRNase preparations from various strains on a 32P-labeled in vitro prepared PSV-A dsRNA gene fragment and a 32P-labeled β-gal dsRNA fragment. Crude extract (350 μg) was incubated with 13 ng of PSV-A or 40 ng of β-gal dsRNA. ∼23mers are indicated by an arrow. ∼23mers were quantified from four independent assays by the TINA program (Raytest,). Averages are given in pixels per square millimeter below the lanes.