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UHPLC-MS/MS chromatograms and spectra of samples for MDA-MB-231 (A) and SK-OV-3 (B) cancer cells. Multiple reaction monitoring (MRM) transitions of ions of m/z 209.0 to ion of m/z 192.0 (quantifier) and to ion of m/z 174.0 (qualifier) were selected for ʟ-Kyn determination.
