Interferon alfa (INN, or HuIFN-alpha-Le), trade name Multiferon, is a natural interferon alpha (IFN-α) which is obtained from the leukocyte fraction of human blood following induction with Sendai virus. Interferon alfa contains several naturally occurring IFN-α subtypes and is purified by affinity chromatography.
Read more about Interferon Alfa: Composition