Fig.•1. Toxicity of Bacillus sphaericus (strain 2362) alone and in combination with a recombinant strain of
Bacillus thuringiensis that only produces Cyt1A against fourth instars of Aedes aegypti. The figure illustrates dose–response regression lines of technical powder combinations (B. sphaericus: B.thuringiensis) of different ratios of the two bacterial strains.