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The discovery and application of novel Bt insecticidal crystal protein genes provides an important strategy for the improvement of biological control of insect pests.More than 130 Bt genes, comprising nearly one-third of the genes recorded worldwide, were isolated by Chinese scientists and named by the International Bt Insecticidal Protein Gene Nomenclature Committee (http://www..lifesci.sussex.ac.uk/NeilCrickmore/Bt/, 2009).