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. 2010 Oct 1;5(10):e13119. doi: 10.1371/journal.pone.0013119

Figure 1. Hypothetical off-target events.

Figure 1

A: Schematic presentation of the event in which identical phenotypes are induced because of shared on-target effects and at the same time different phenotypes are induced because of off-target effects. Phenotype 2 is due to down-regulation of the on-target gene and is induced by dsRNA1 and dsRNA2. Phenotype 1 and 3 are due to down regulation of the off-target gene X and Y respectively and are specific for the individual distinct dsRNAs. In this fortunate event, the individual off-target effects are not identical and are classified as off-target-effects; bona fide conclusions will be drawn from the outcome of this experiment. B: Schematic presentation of the event in which identical phenotypes are induced because of shared on-target effects but at the same time an additional identical phenotype is induced by the use of the two independent dsRNAs caused by off-target effects. Phenotype 2 is due to down-regulating the on-target gene and is shared by dsRNA1 and dsRNA3. Phenotype 1 is due to down regulation of a shared off-target gene of the distinct dsRNAs. In this unfortunate event, the off-target effects are identical and will be classified as on-target effects; false conclusions will be drawn from the outcome of this experiment.