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(A) Sensitivity of the three types of pair in sandwich ELISA for S. typhimurium. (B) Standard curve of L2-L6 HRP in PBST; (C) Specificity of the LPS mAb based sandwich ELISA for S. typhimurium; (D) Calibration curve of the LPS mAb based sandwich ELISA for S. typhimurium in pure milk.
