interferon beta (beta)-1b

in·ter·fer·on be·ta (β)-1b

(in'tĕr-fēr'on bā'tă)
A purified protein containing 165 amino acids (MW approximately 18,500) with antiviral and immunomodulatory effects; used in the treatment of relapsing-remitting multiple sclerosis to reduce the frequency of clinical exacerbations.
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