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How does Bacillus thuringiensis (Bt) use...

How does Bacillus thuringiensis (Bt) used to protect plants from butterlfy caterpillers?

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Dried spores of Bt are mixed with water and sprayed onto vulnerable plants such as brassicas and fruit trees, where these are eaten by the insect larvae. In the gut of the larvae, the toxin are released and the larvae get killed.
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