Fig. 4From: Integrative physiological and metabolic traits reveal the mechanisms of chamomile flowers in response to nicotine stressMulti-peak of metabolite detection and QC sample mass spectrometry detection TIC overlay. Multi-peak of metabolite detection under positive ion mode (A); multi-peak of metabolite detection under negative ion mode (B); QC sample mass spectrometry detection TIC overlay under positive ion mode (C); QC sample mass spectrometry detection TIC overlay under negative ion mode (D)Back to article page