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Action of the cell wall crude proteinase on β-casein at various temperatures. Lanes: 1, molecular weight markers; 2, β-casein; 3, 10°C; 4, 20°C; 5, 30°C; 6, 40°C; 7, 50°C. Reaction mixtures were incubated at pH 6.0 for 8 h. Electrophoretic conditions were as in Fig. 1.
