Type I interferons ( IFNs ) are a family of cytokines that have antiviral and antiproliferative effects .
type i interferons ( ifns ) are a family of cytokines that have antiviral and antiproliferative effects .
O O B-protein_family_or_group O B-protein_family_or_group O O O O O B-protein_family_or_group O O O O O O O