Formulation | Supplied frozen with a carrier protein |
Molecular Weight | 20 kDa |
Source | cDNA obtained from human fibroblast interferon beta mRNA expressed in E.coli |
Purity |
> 95% by SDS-PAGE stained by Coomassie Blue Endotoxin level < 1 EU/μg |
Bioactivity | Measured using a cytopathic inhibition ***** on human lung carcinoma cell line A549 with encephalomyocarditis virus (EMCV). EC50 for IFN beta 1b in this ***** is ~ 1 U/ml |
Synonyms | Human IFNB, Human Beta Interferon, Human IFN Beta 1b, Human Interferon beta 1b, Human Type I Interferon Beta, Human IFN B |
Storage | For retention of full activity store at -70°C or below and avoid repeated freeze/thaw cycles |