Immune cell functions

"Immune cell functions" is not the name of a single molecule, protein, or receptor but rather refers to the collective activities performed by various immune cells in both innate and adaptive immunity. These include recognition of pathogens via pattern-recognition receptors (such as Toll-like receptors), phagocytosis by macrophages and neutrophils, antigen presentation by dendritic cells and B cells, cytotoxic activity by T lymphocytes and natural killer (NK) cells, antibody production by B lymphocytes/plasma cells, secretion of cytokines for intercellular communication and regulation of inflammation, among others. The molecular mechanisms underlying these functions involve complex signaling pathways such as NF‑κB activation via TLRs in innate immunity; T-cell receptor (TCR) and B-cell receptor (BCR) signaling in adaptive immunity; JAK/STAT pathways for cytokine responses; inflammasome activation for inflammatory mediator release; among many others. Dysregulation of these processes can contribute to diseases including cancer progression/escape from immunosurveillance,[1][3] chronic inflammation,[2][4] autoimmunity,[4] infection susceptibility,[4] and resistance to immunotherapy.[5] In summary: *Immune cell functions* is too broad/vague to serve as a canonical therapeutic target entry. It describes diverse cellular activities essential for host defense but does not correspond to any single druggable protein/receptor/enzyme/transporter/etc., nor does it have standard aliases or abbreviations suitable for structured data extraction.[1][2][3][4]