Residual enzyme activity after <i>in vitro</i> inhibition.

<p>The relative residual AChE activity with or without propoxur in susceptible (SS, n = 20) and resistant (RR, n = 21) lice is displayed. A statistically significant effect on residual AChE activity was found between the two groups, indicating a protective effect of the <i>Phe362Tyr</i> mutation against propoxur inhibition in homogenates (p<0.0001, ANOVA). The box plots indicate the group median, 75% and 25% quantiles, and whiskers (JMP, SAS Institute). Different letters indicate a statistically significant difference.</p>