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. 2008 Mar 24;116(7):930–936. doi: 10.1289/ehp.11068

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LC/MS of brevetoxin–nucleic acid adducts formed by reaction of PbTx-2 with isolated rat lung cells shown as extracted ion current (m/z 860–1,400) from (A) a total ion chromatogram, (B) mass spectra, and (C) product ion spectra. Rel Int, relative intensity. The spectra shows brevetoxin–cytidine adduct molecule (m/z 1,154) and products (m/z 1,022, m/z 124, and m/z 112) resulting from fragmentation of the nucleoside. The brevetoxin adduct fragment pattern shown depicts a hypothetical nucleoside linkage to the epoxide to illustrate potential nucleoside fragmentation.