T lymphocytes
– eradicate pathogens, – clear infected self-cells- aid other cells in inducing immunity
T lymphocytes, also known as T cells, are a type of white blood cell that plays a crucial role in the immune system. They are produced in the bone marrow and mature in the thymus gland. T cells help the body fight off infections by recognizing and attacking specific antigens on foreign invaders like viruses, bacteria, and cancer cells.
There are several types of T cells, including helper T cells, cytotoxic T cells, and regulatory T cells. Helper T cells, or CD4+ T cells, help activate and coordinate the immune response by releasing cytokines and other signaling molecules that stimulate other immune cells. Cytotoxic T cells, or CD8+ T cells, directly attack and destroy infected or abnormal cells. Regulatory T cells, or Tregs, help to prevent the immune system from attacking the body’s own tissues by suppressing immune responses.
T cells can recognize antigens on foreign invaders through their T cell receptors (TCRs), which are proteins on the surface of the T cell that specifically bind to a particular antigen. T cells can also be activated by antigen-presenting cells (APCs) such as dendritic cells, which engulf and break down foreign invaders and then present fragments of the antigens on their surface to T cells for recognition.
Overall, T cells play a critical role in the immune response and are essential for protecting the body from infection and disease.
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