Fig. 3

Percentage mortality of field collected Anopheles gambiae (s.l.) mosquitoes exposed to permethrin and lambda-cyhalothrin, with or without pre-exposure to piperonyl butoxide (PBO), in the three study villages (V1 = Minepa, V2 = Lupiro, V3 = Kisawasawa). The two dotted lines denote 98% and 90% mortality, respectively