when low concentrations ( less than 10 antiviral units/ml ) of interferons were used , and equal numbers of antiviral units of e. coli-derived ifn-gamma and e. coli-derived ifn-alpha a or ifn-alpha 2 were compared for their ability to augment nk , e. coli-derived ifn-gamma was found to be more active in augmenting nk against the k562 targets , than e. coli-derived ifn-alpha a or ifn-alpha 2 .
C0021747
interferons
C0021734
ifn-alpha 2