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(a) Aggregate diameters of TV and RV, as indicated, suspended in 10 ppm PAA at pH 3. (b) Aggregate diameters of TV suspended in the mixture of PAA and quencher (600 mg/liter sodium thiosulfate containing 16 mg/liter catalase in 0.1 M PB) at a final pH of 7 and in 0.01 M PB at pH 3 without PAA, as indicated.
