Fig. 3From: Expression of an extracellular ribonuclease gene increases resistance to Cucumber mosaic virus in tobaccoRNase activity in the crude extract and apoplast fractions from ESR and control plants. Relative activity is shown with standard errors (n = 8 for the crude extract and n = 3 for apoplasts). Significant differences at P < 0.01 and no significant differences between ESR and control plants, calculated using the t-test, are indicated by ** and ns, respectivelyBack to article page