Which components are associated with cell-mediated immunity?

Cell-mediated immunity primarily involves T lymphocytes, which play a crucial role in recognizing and responding to infected or abnormal cells, such as those infected by viruses or transformed by cancer. These T-lymphocytes include various subtypes, such as cytotoxic T cells that kill infected cells and helper T cells that assist in activating other immune cells.

In addition to T lymphocytes, neutrophils and monocytes/macrophages are also important components of this immune response. Neutrophils act as the first line of defense during an infection by phagocytizing pathogens, while monocytes develop into macrophages that can also phagocytize pathogens and present antigens to T cells, thus bridging both innate and adaptive immunity.

The other choices include components that are not primarily involved in cell-mediated immunity. For instance, B-lymphocytes, antibodies, and complements relate to humoral immunity, which is focused on the production of antibodies to neutralize pathogens. Immunoglobulins and cytokines are also part of both humoral and cell-mediated immunity but do not directly pertain to the mechanisms of cell-mediated responses. Natural killer cells are involved in innate immunity and do not fall directly under the purview of cell-mediated adaptive mechanisms, while histamines