Fig. 3From: Insecticide susceptibility of natural populations of Anopheles coluzzii and Anopheles gambiae (sensu stricto) from Okyereko irrigation site, Ghana, West Africa Anopheles gambiae (s.l.)Â female from Okyereko knock-down rate after 60Â min and 24Â h delayed mortality observed using DDT and Pyrethroid insecticides either alone or synergists plus insecticides. Error bars represent 95Â % confidence interval (CI)Back to article page