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Partial least squares (PLS) scores plot for area of 2,8-dihydroxyadenine, adenine, adenosine, 2-deoxyadenosine, hypoxanthine, inosine, 2-deoxyinosine and uric acid. Positive ionization mode (A) and negative ionization mode (B) are shown. u [1] is the Y scores of component 1 and t [1] is the X scores of PLS component 1.
