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PLS-DA score plot based on human plasma from 46 TB patients, 30 CAP patients, and 30 controls without active infection. (A) PLS-DA score plot of positive mode data, with accuracy of 99%, multiple correlation coefficient (R2) of 92.5%, and cross-validated R2 (Q2) of 82.7%. (B) PLS-DA score plot of negative mode data, with accuracy of 97.2%, multiple correlation coefficient (R2) of 88.6%, and cross-validated R2 (Q2) of 77.4%.
