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2D 13C-13C J-INADEQUATE spectra of never-dried Arabidopsis cell walls at room temperature, correlating double-quantum (DQ) and single-quantum (SQ) 13C chemical shifts. The spectra were measured at 400, 600, and 900 MHz. Insets magnify the C1 region of the spectra to indicate the resolution enhancement by higher magnetic fields. The bottom row amplifies the C2–C4 region of arabinose, where high magnetic fields significantly improve the resolution of multiple forms of arabinose.
