binding of radiolabeled tumor necrosis factor ( tnf ) to cell surface receptors was markedly reduced in human foreskin fibroblasts and cells from sv-80 and hela cell lines subsequent to treatment with interleukin 1 ( il-1 ) or 4 beta-phorbol-12-myristate-13-acetate ( pma ) .
C0016030
fibroblasts
C0007634
cells