we compared the bone-resorbing activity in the conditioned medium from phytohemagglutinin ( pha ) -stimulated human peripheral blood mononuclear cell cultures with that of partially purified human monocyte-derived interleukin 1 ( il-1 ) , human recombinant il-1 alpha ( pi 5 ) and il-1 beta ( pi 7 ) , human recombinant tumor necrosis factor-alpha ( tnf alpha ) , and pth in fetal rat long bone cultures .
C0021753
il-1 beta
C0086418
human