Ibritumomab Tiuxetan is classified as a CD20-directed Radiotherapeutic Antibody.
Interferon Alfa-2B is classified as an Interferon alpha. Interferon Alfa-2B is more commonly known as the brand Intron A.
Rituximab is classified as a CD20-directed Cytolytic Antibody. Rituximab is more commonly known as the brand Rituxan.