(January 1999)

The recombinant human interferon α 2b (IFN-α2b) produced by Cuban technology is obtained from Escherichia coli.This is the active principle of the product registered in Cuba as Heberon alfa R® trademark (IFN-α2b, CIGB, Havana),which has been successfully used worldwide for the therapy of several viral diseases and neoplasms. Here wedescribe the purity and identity tests used for its molecular characterization.