Tumor Necrosis Factor (TNF) receptors are a group of receptors that bind to the cytokine TNF. These receptors play a crucial role in the regulation of immune cells, inflammation, and apoptosis. There are two main types of TNF receptors: TNFR1 (Tumor Necrosis Factor Receptor 1) and TNFR2 (Tumor Necrosis Factor Receptor 2). Both receptors are involved in various cellular responses, including cell survival, apoptosis, and inflammation.