Cellular immunity
Cell to cell interaction, T cells
Cellular immunity, also known as cell-mediated immunity, is a type of immune response that involves the activation of T cells in response to antigens such as viruses and cancer cells. The immune response involves the recognition of the antigen by the T cells and the subsequent activation of other immune cells and molecules to eliminate the antigen.
Cellular immunity is important for defense against intracellular pathogens, such as viruses and some bacteria, as well as for the recognition and elimination of cancer cells. The cells involved in cellular immunity include T cells, natural killer (NK) cells, and macrophages.
There are two main types of T cells involved in cellular immunity: helper T cells and cytotoxic T cells. Helper T cells help activate other immune cells, while cytotoxic T cells bind to infected or cancerous cells and kill them.
There are several stages involved in the cellular immune response, including the recognition of the antigen, the activation and proliferation of T cells, the migration of T cells to the site of infection or cancer, and the elimination of the antigen. The process is regulated by cytokines and other signaling molecules produced by the immune cells.
Overall, cellular immunity plays a critical role in protecting the body against infections and cancer, and understanding the mechanisms involved in the response can lead to the development of new treatments and vaccines.
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