Comparison of RNAi treatments between Bristol and Hawaii. Shown are three representative RNAi treatments that illustrate RNAi effects in Bristol (upper panel), in Hawaii (middle panel), and their differential effects in Bristol versus Hawaii (lower panel). The negative control is lin-31(RNAi) and the reference is the empty vector (ev). Relative OD at 600 nm on the y-axis, time (in hours) on the x-axis. The RNAi treatment is indicated in the grey box. N2 is shown in red, CB in blue.