Fig. 2From: Geographical origin classification of Phoebe zhennan and Phoebe bournei by solid phase micro-extraction and gas chromatography-mass spectrometryGC–MS total ion chromatogram of Phoebe bournei. a GC–MS total ion chromatogram of specimens from Guizhou. b GC–MS total ion chromatogram of specimens from Hubei. c GC–MS total ion chromatogram of specimens from GuangxiBack to article page