Tumor necrosis factor-alpha

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In medicine, tumor necrosis factor-alpha is a "serum glycoprotein produced by activated macrophages and other mammalian mononuclear leukocytes. It has necrotizing activity against tumor cell lines and increases ability to reject tumor transplants. Also known as TNF-alpha, it is only 30% homologous to tnf-beta (lymphotoxin), but they share TNF receptors.[1]

TNFR-Fc fusion protein (etanercept - pronounced et a ner' set) blocks the activity of TNF-alpha.[2]

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