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Mass spectra of Dols isolated from roots fed various metabolic precursors. [U-13C6]Glc, [1-13C]Glc, [2H2]DX, or [2H]MVL were used in the absence or presence of sorbitol (green or blue traces, respectively). Dashed lines indicate the m/z of signals assigned to monoisotopic ions of ammoniated, sodiated, and potassiated [12C5n]Dol-n. Note that the m/z axis is adjusted to the value of the molecular mass (M) of monoisotopic [12C5n]Dol-n for each Dol-n.
