Correlations and interactions in the production of interleukin-6 (IL-6), IL-1, and tumor necrosis factor (TNF) in human blood mononuclear cells: IL-6 suppresses IL-1 and TNF - Schindler, R; Mancilla, J; Endres, S; Ghorbani, R; Clark, S C; Dinarello, C A (Blood, 1990)