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Effect of TNFα neutralization on Salmonella killing by macrophages. Neutralization of extracellular TNFα with 10 μg/ml TNF-soluble receptor (sTNFR) does not alter the killing of virulent 12023 or sseB mutant S. typhimurium by peritoneal macrophages from WT mice. Selected groups of macrophages were treated with 20 units per ml IFN-γ. The data represent the mean ± SEM of three to nine independent experiments.
