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Migration of the chemical shift of the intracellular phosphate resonance in E. coli HB101(pUC8) whole-cell NMR spectra as a function of time. Each point is the average of two runs. TeO32− or SeO32− was added to the cell suspensions at the 15-min mark. Filled circles, control glucose-fed cells; open circles, tellurite-treated cells; open squares, selenite-treated cells.
