serological evidence as well as isoelectric point determination further supported that the predominant form of il-1 synthesized was of the pi 5 type , and immunoprecipitation of 35s-labeled cell lysate with monospecific polyclonal antibody to il-1 alpha or il-1 beta detected only il-1 alpha precursor .
C0021755
il-1
C0021753
il-1 beta