A) Motility index dose response curve of worms at the 12 hr time point when treated with (3R,6R)-linalool oxide acetate (1), (E)-spiroether (2), luteolin (3) and luteolin-7-O-β-D-glucopyranoside (4) (abbreviated as Com-1, Com-2, Com-3 and Com-4) at different concentrations. Motility index was calculated as the standard deviation (SD) over 800 data points (i.e. 4 readings per min for 200 min) of the cell index (CI) difference from the rolling average over 20 data points (10 proceeding and preceding CI values—5 min total). B) Combined IC50 values of these four compounds calculated for three different doses at 1 hr, 6 hr, and 12 hr time points. Error bars represent 95% confidence intervals of nonlinear curve fit. The curves were marginally shifted on the x-axis to aid viewing. These figures represent the data from three independent studies.