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. 2013 May;54(5):1505–1511. doi: 10.1194/jlr.D034553

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Copyright © 2013 by the American Society for Biochemistry and Molecular Biology, Inc.

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Fig. 2. — Mass chromatograms of a standard solution (A–F) and of a typical plasma sample spiked with 50 pg of each internal standard (G–L). Peak identification (see Fig. 1 for structure): 1, 8-iso-15(R)-PGF_2α; 2, 8-iso-PGF_2α; 3, 8-iso-PGF_2β; 4, 11β-PGF_2α; 5, 15(R)-PGF_2α; 6, 5-trans-PGF_2α; 7, PGF_2α; 8, 8-iso-PGF_2α-d4; 9, PGF_2α-d4; 10, iPF_2α-IV; 11, iPF_2α-IV-d4; 12, iPF_2α-VI; 13, 5-iPF_2α-VI; 14, (±)5-8,12-iso-iPF_2α-VI; 15, iPF_2α-VI-d11; 16, 5-iPF_2α-VI-d11; 17, (±)5-8,12-iso-iPF_2α-VI-d11; ?, unknown compounds. IS, deuterated internal standards.