References:
Danis, V. A., G. M. Franic, et al. (1991). "Effects of granulocyte-macrophage colony-stimulating factor (GM-CSF), IL-2, interferon-gamma (IFN-gamma), tumour necrosis factor-alpha (TNF-alpha) and IL-6 on the production of immunoreactive IL-1 and TNF-alpha by human monocytes." Clin Exp Immunol 85(1): 143-50.
Rathjen, D. A., K. Cowan, et al. (1991). "Antigenic structure of human tumour necrosis factor: recognition of distinct regions of TNF alpha by different tumour cell receptors." Mol Immunol 28(1-2): 79-86.