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Degradation efficiency of P. xylostella gut bacteria on chlorpyrifos. (A) Standard curve of chlorpyrifos detected by ultraviolet spectrophotometry under OD293 nm; (B) degradation efficiency of chlorpyrifos by different gut bacteria. Eb, Enterobacter sp.; Sm, Serratia sp.; Ec, Enterococcus sp.; and CK, control. Error bars are SD; n.s. indicates no significant difference.
