Immune system and tissue cells

The term \"Immune system and tissue cells\" collectively refers to the extremely diverse populations of cells within the immune system (such as T cells, B cells, NK cells, neutrophils, monocytes, dendritic cells, mast cells, and macrophages) as well as other tissue-resident cells that interact with or are influenced by immune activity[1][2][3][4][5][6]. This grouping is not a single therapeutic target but describes the complex interplay of cells responsible for identifying and removing pathogens, maintaining tissue integrity, mediating inflammatory responses, and orchestrating both innate and adaptive immune responses in various tissues throughout the body[1][2][5]. Each cell type within this category has distinct molecular targets and functions—for example, T cell receptors, B cell receptors, cytokine receptors, etc.—and plays specific roles in health and disease, but \"Immune system and tissue cells\" as a phrase does not map to a single molecular entity useful for clinical targeting[1][2][3][4][5][6][7].