產品介紹
PBL Assay Science
11415-1
Human IFN Beta (Beta 1a, Mammalian Expressed)
~ 23 kDa
cDNA obtained from human fibroblast interferon beta 1a mRNA expressed in CHO cells
> 95% by SDS-PAGE stained by Coomassie Blue Endotoxin level < 1 EU/μg
Measured using a cytopathic inhibition assay on human lung carcinoma cell line A549 with encephalomyocarditis virus (EMCV). EC50 for IFN beta 1a in this assay is ~ 1 U/ml
50 mM NaOAc, pH 5.5 containing 0.1% BSA
< 1 EU/μg
> 95%, one N-linked glycosylation site
Proprietary chromatography methods
For retention of full activity store at -70 oC or below and avoid repeated freeze-thaw cycles
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