While particles purified from plants infiltrated with pEAQ-RNA-1-Int and pEAQ-RNA-2 (Fig. 6c, lane 1) contained approximately equal amounts of RNA-1 and RNA-2, as expected from a wild-type infection, particles purified from plants infiltrated with RNA-1-Int-GAD and pEAQ-RNA-2 (lane 2) contained far less RNA-1 than RNA-2: the ratio was closer to 6% RNA-1 and 94% RNA-2 as measured by band densitometry in three replicates of the experiments. This evidence concerns the gene GAD1 and infection.