interféron bêta 1b

CONT: BETASERON: Berlex Canada, interferon beta-1b is an immunomodulator used in ambulatory patients with relapsing-remitting multiple sclerosis. Betaseron is a highly purified, sterile, lyophilized protein product produced by recombinant DNA techniques and formulated for use by injection. It is manufactured by bacterial fermentation of a strain of E. coli that bears a genetically engineered plasmid containing the gene for human interferon betaser17. The native gene was obtained from human fibroblasts and altered in a way that substitutes serine for the cysteine residue found at position 17.