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11.9 mM phosphate, 137 mM NaCI, 2.7 mM KCl, pH 7.4 

>=95% by SDS-PAGE

MW 57,000

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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