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. Author manuscript; available in PMC: 2012 Oct 12.
Published in final edited form as: Chem Rev. 2011 Jun 23;111(10):6022–6063. doi: 10.1021/cr200075y

Fig. 34.

Fig. 34

DMP can identify metabolite peaks in LC-MS analyses with relative levels that are either increasing (A) or decreasing (B) between control and enzyme-disrupted samples. The increasing or decreasing peaks correspond to candidate substrates and products, respectively. Standard-free, relative quantitation is achieved by comparison to the many other peaks that are not changing (shown in grey).