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16.8 kDa

Recombinant DNA expressed in Human Embryonic Kidney Cells (HEK293)

Greater than 95% as determined by SDS-PAGE
Endotoxin < 1 EU/μg

Measured by IL-10 induction in COLO 205 human colorectal cells (Nagalakshmi, M.L. et al., 2004, International Immunopharmacology, 4:679)

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

< 1 EU/μg

A combination of ion exchange and size exclusion chromatography

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