of twelve recombinant cytokines tested as possible candidates for trf in conditioned media , namely human recombinant interleukin ( hril ) 1 alpha and beta , hril2 , hril3 , hril4 , hril5 , hril6 , hrifn-alpha and -gamma , hr granulocyte macrophage colony-stimulating factor ( hrgm-csf ) and tumor necrosis factor ( hr tnf ) -alpha and -beta only il2 was found to have trf activity .
C0086418
human
C0021756
il2