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ESI-MS analysis of dolichol. ESI-MS (A to C) and MS/MS (D to F) spectra of an authentic dolichol standard composed of 11 isoprene units (A and D), L. amazonensis sample with the same retention time of the dolichol standard of 11 isoprene units (B and E), and L. amazonensis sample with the same retention time of a polyisoprenoid standard of 60 carbons (C and F). (A and B, m/z 775.8 [M + Li]+; C, m/z 844.6 [M + Li]+).
