Immune cell population

"Immune cell population" refers to the totality and diversity of immune cell types within a tissue, organ, or biological sample. This term encompasses various leukocyte lineages and their subtypes, including but not limited to T cells, B cells, NK cells, dendritic cells, macrophages, neutrophils, and monocytes. Each immune cell type may have distinct molecular markers, functions, and disease associations, and targeting these cells for therapeutic or research purposes typically involves selecting well-defined, individual molecules or cell surface proteins rather than the undifferentiated cell population as a whole. The term is not a molecular target and is too ambiguous and generic for use in structured target databases focused on individual drug targets.