20 mM phosphate, pH 7.4, with 150 mM NaCl and 0.05% NaN3

>=95% by SDS-PAGE

MW 50,000 

Human Plasma 

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

> 1 year

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