What is the role of T cells in the immune system?
T cells, or T lymphocytes, are a type of white blood cell that play a critical role in the immune system. They are responsible for recognizing and destroying infected or abnormal cells, helping to protect the body against a range of diseases and infections. T cells are activated by recognition of specific antigens on the surface of target cells, and then differentiate into various subtypes that perform different tasks. Some T cells directly attack diseased cells, while others secrete cytokines that help to recruit other immune cells to the site of infection. The role of T cells is essential to our ability to fight off pathogens, and their dysfunction or dysfunction can lead to chronic infections or autoimmune diseases.
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