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. 2012 Feb 3;7(2):e29906. doi: 10.1371/journal.pone.0029906

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Gauthier et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) total scan photo diode array (PDA) chromatogram. Chromatogram of the ion at (B) m/z 403 in positive ionization mode (tryptoquivaline F), (C) m/z 444 in positive ionization mode (fumiquinazoline C), (D) m/z 345 in positive ionization mode (trypacidin), (E) m/z 345 in negative ionization mode (monomethylsulochrin), (F) m/z 283 in negative ionization mode (questin).