TNF-alpha is secreted by macrophages, monocytes, neutrophils, T-cells (principally CD4+), and NK-cells. Many transformed cell lines also secrete TNF-alpha. Monomeric mouse TNF-alpha is a 156 amino acid protein (N-glycosylated) with a reported molecular weight of 17.5 kD. https://www.creative-diagnosti....cs.com/Anti-Tnf-MAb-
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