Fig. 1From: Characterization of ginsenosides from Panax japonicus var. major (Zhu-Zi-Shen) based on ultra-high performance liquid chromatography/quadrupole time-of-flight mass spectrometry and desorption electrospray ionization-mass spectrometry imagingGeneral technical roadmap for the comprehensive characterization and spatial tissue distribution of ginsenosides in the rhizome of Panax japonicus var. major (PJM) by integrating UHPLC/QTOF-MS and DESI-MSIBack to article page