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34-36 kDa

Human EPO cDNA expressed in CHO cells

Greater than 95%

Measured using a biological assay model of the ex-hypoxic polycythemic mouse versus international standard (EPO NIBSC #87/684)

Phosphate buffered saline (PBS) containing 0.1% bovine serum albumin (BSA)

< 1 EU/μg

Proprietary chromatography method

For retention of full activity store at -70 oC or below and avoid repeated freeze-thaw cycles