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2H MR spectra recorded from plasma samples after infusion of a mixture of [6,6′-2H2]glucose and [2H9]choline in mice carrying a subcutaneous renal tumor. (A). Spectrum taken immediately after infusion. (B). Spectrum taken 15 min after infusion. The 2H signal for glucose is strongly reduced and that for choline signal is absent. Vertical scales are arbitrary.
