Pinking assay results showing thiosulfinate abundance in transgenic and nontransgenic plants. Thiosulfinate abundance shown in nontransgenic (HN, ON, and DN) and transgenic (H3, O3, and D2) onion extracts with (squares) and without (circles) the addition of recombinant LFS. Images below show pinking color for the respective plants (the left Eppendorf is without recombinant LFS, the right is with recombinant LFS). The 95% confidence limit is calculated from an ANOVA using the within-bulb variation.