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Autoradiogram of TLC-separated, labeled products of endo-β-mannanase digestion of 70% (v/v) methanol-insoluble products formed on incubating microsomal membrane preparations from developing tobacco seeds with GDP-(14C)-Man (80 μm) and unlabeled UDP-Gal (0.8 mm). M, Man; O, galactomannan octasaccharides; N, galactomannan nonasaccharides; H, higher galactomannan oligosaccharides.
