soldiers are the first of a new kind of creature - "autocidal" maniacs genetically modified to wipe out their own kind without harming other creatures. The first animals being targeted with these "living pesticides" are disease-carrying mosquitoes and crop-munching caterpillars, but the approach should work with just about any animal - from invasive fish and frogs to rats and rabbits. If it is successful, it could transform the way we think about genetically engineered animals.
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