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. Author manuscript; available in PMC: 2019 Jan 18.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2016 Dec 21;1041-1042:104–112. doi: 10.1016/j.jchromb.2016.12.026

Fig. 1.

Fig. 1.

Chemical structures of eighteen prototypes detected in rat serum after oral administration of Xian-ling-gu-bao extracts based on MS full scan and MS/MS scan by UPLC/Q-TOF-MS system with electrospray ionization (ESI). The rat serum were pretreated with methanol-acetonitrile (2:1, V/V) to perform protein precipitation, and then the concentrated supernatant was injected into UPLC/Q-TOF-MS system.