Figure 3. Gus assays to test for cryptic splice sites in the MSV long intergenic region.

A) Gus expression cassettes used in the assays. B) Expression of Gus from p35S-GSLIR²⁴¹ (test construct) as a ratio to p35S-GS (positive control construct), four days after bombardment. Each bar is an average of three replicates; error bars represent 95% confidence intervals. Negative = negative control (protein extract from a non-bombarded Black Mexican sweet sample).