Figure 4From: Pyrethroid resistance in the major malaria vector Anopheles arabiensis from Gwave, a malaria-endemic area in ZimbabweMean optical density values of GST, monooxygenase and esterases enzymes of F1 and F2 An. arabiensis progeny (perm screened) reared from collections done in 2008 and corresponding activity for susceptible An. arabiensis (KGB) samples assayed simultaneously.Back to article page