Buffer composition: 10 mM Sodium Phosphate, 0.15 M Sodium Chloride, pH 7.2, 1 % (w/v) BSA, Protease/IgG free. 0.1 % Kathon CG (v/v) is included as preservative. Streptavidin was overexpressed in bacterial culture, purified and conjugated to horse radish
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