Fig. 1From: Serum concentrations of active tamoxifen metabolites predict long-term survival in adjuvantly treated breast cancer patientsMRM transitions of tamoxifen and its metabolites. The chromatograms are obtained by analyzing the second point of the calibration curve. The chromatographic separation of isomers of 4OHtam and endoxifen are shown in the lowest and second lowest panels, respectively. APPI atmospheric pressure photoionization, MRM multiple reaction monitoringBack to article page