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. 2020 Mar 2;9:23. doi: 10.1186/s40249-020-0637-2

Fig. 2.

Fig. 2

Mortality rates of adult Aedes aegypti from the Republic of the Congo 24 h after exposure to insecticides alone or with 1 h pre-exposure to synergist. a, Brazzaville; b, Ngo. Error bars represent standard error of the mean. DDT, Dichlorodiphenyltrichloroethane. PBO, Piperonyl butoxide