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20 mM Sodium Phosphate, 0.15m NaCl, pH 7.4

≥95% by SDS-PAGE

MW 71,000

Shown to be non-reactive for HBsAg, anti-HCV, anti-HBc, and negative for anti-HIV 1 & 2 by FDA approved tests

>5 years

≤ -20°C

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