Fig. 3.

Metabolic detoxification enzyme activity in Anopheles sinensis from Ruian county (upper panel) and Yongjia county (lower panel). Comparisons of field-collected resistant mosquitoes (DT-R, DDT-live; DE-R, deltamethrin-live, and MA-R, malathion-live) to susceptible laboratory strain (Lab) and field-collected insecticide unexposed (Field) mosquitoes. P450 activity was measured by pmoles of 7-HC produced/min/mg protein; GST activity was measured by umoles of cDNB produced/min/mg protein; COE activity was measured by umoles of p-nitrophenol formed/min/mg protein. Mean activity and standard error are shown by a red dot with error bar. *P < 0.05 and **P < 0.001 represent significant differences by pairwise comparison.