-Bt is a spore forming bacteria that produces crystal proteins. These proteins have shown to be toxic to many species of insects.
-Sometimes known as insecticidal crystal protiens (ICP)
-These crystal proteins are toxic to insects but harmless to humans and other mammals.
-The crystal proteins attach to receptors in the insect's intestine, but not all insects have the same receptors. Humans and other mammals dont have these receptors so the toxin doesn't affect us.
-Bt is used in agriculture: organic farming, spraying programs, and transgenic crops.
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