6 0.33% gum guaiac, ' 0.08% hydrogen peroxide. d Peroxidase in distilled water.• Peroxidase in pH 6.5 phosphate buffer.and their statistical significance are presented in Table I for unbuffered peroxidase solutions and for peroxidase dilutions prepared in 0.1 M phosphate buffer at pH 6.5; corresponding values for gum guaiac covering the range from 1.0 X 10-4 to 1.0 X 10~6 weight % peroxidase are also given (Table I).Regression lines were calculated using the least mean square method (3).
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