virus-induced interferon ( vif ) , and immune interferon ( iif ) produced by lymphocytes following activation by various mitogens ( phytohaemagglutinin , concanavalin a , staphlococcal enterotoxin a ) or by specific antigenic stimulation ( tuberculin , bacterial toxoids , and viral antigens ) show important functional differences .
C0021747
interferon
C0021745
immune interferon