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Typical 1H-NMR spectrum of lyophilized mucus from Helix aspersa (<3 kDa) with assignment of the main metabolites. (1D-noesy experiment with water presaturation, pH = 7.35, 298.0 K). (a) 1H-NMR spectrum in the interval from 5.0 to 9.0 ppm; (b) 1H-NMR spectrum in the interval from 0.5 to 4.5 ppm.
