human fibroblast cells treated with a combination of inhibitors of protein and rna synthesis [ cycloheximide and actinomycin d as used to superinduce interferon beta ( ifn-beta ) ] secrete two proteins with molecular masses of 22000 and 27000 kilodaltons ( called 22-kdal and 27-kdal ) that are precipitable with an antiserum raised against impure ifn-beta but are antigenically distinct from ifn-beta 1 .
C0016030
fibroblast
C0015980
ifn-beta