IFN alpha 1a Protein, synthesized by macrophages, exhibits robust antiviral activities by stimulating key enzymes—a protein kinase and an oligoadenylate synthetase. This orchestrated molecular response enhances the host's immune defenses against viral threats. Animal-Free IFN alpha 1/IFNA1 Protein, Mouse (His) is the recombinant mouse-derived animal-FreeIFN alpha 1a protein, expressed by E. coli , with N-His labeled tag.This product is for cell culture use only.