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Sedimentation velocity profiles for N-βGRP, laminarin and their mixtures, as monitored at 49,000 rpm and 20°C by absorbance at 280 nm (A–C) and interference optics (D–F) at 5 min. intervals: 75 μM N-βGRP (A & D) and 125 μM laminarin (B & E) were sedimented separately or together (C & F). Fringe displacements in D–F are given in arbitrary units.
