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. 2013 Jun 5;11(6):1936–1960. doi: 10.3390/md11061936

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© 2013 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Chromatograms of the PSTs standards and a positive sample for M. glacialis, hydroxylated toxins are oxidized with periodate and non-hydroxylated toxins with peroxide. (A) Standards injected with periodate oxidation, peak GTX_1,4(1) and GTX_1,4(3) are secondary oxidation products of GTX_1,4. Peaks NEO(1) and NEO(3) are secondary oxidation products of NEO. (B) Standards injected with peroxide oxidation. (C) Chromatogram of a positive sample in M. glacialis injected with periodate oxidation. (D) Chromatogram of a positive sample in M. glacialis injected with peroxide oxidation.