Fig. 9From: Integrating animal experiments, mass spectrometry and network-based approach to reveal the sleep-improving effects of Ziziphi Spinosae Semen and γ-aminobutyric acid mixtureIdentification of the 4 prototype ingredients in mouse brains by UPLC-Q/TOF–MS/MS. Mass spectra of each peak were obtained and used for compound identification. The accurate masses and fragment ions of each peak were confirmed by database searchingBack to article page