the stimulation of plasminogen activator activity can be abolished by preincubation of placental interleukin 1 with an antiserum to homogeneous 22k factor , a species of interleukin 1 beta , indicating that the stimulation of plasminogen activator activity is due to interleukin 1 and not contaminating factors .
C0021753
interleukin 1 beta
C0021755
interleukin 1