T-lymphocyte
T-lymphocytes, also known as T cells, are a type of white blood cell that play a central role in cell-mediated immunity. They are named after their maturation place in the thymus.
Types of T-lymphocytes[edit | edit source]
There are several different types of T-lymphocytes, each with a unique function in the immune response. These include:
- Helper T cells - These cells assist in the immune response by releasing cytokines that stimulate other immune cells.
- Cytotoxic T cells - These cells are capable of killing cells that are infected with viruses or other pathogens.
- Regulatory T cells - These cells help to control the immune response and prevent it from attacking the body's own cells.
- Memory T cells - These cells remember previous encounters with pathogens and can mount a quick response if the same pathogen is encountered again.
Function of T-lymphocytes[edit | edit source]
T-lymphocytes are essential for the immune response. They are responsible for recognizing and responding to foreign substances (antigens) in the body. When a T cell encounters an antigen, it binds to it and becomes activated. This activation triggers a series of events that lead to the destruction of the antigen.
Role in disease[edit | edit source]
T-lymphocytes play a role in many diseases. In autoimmune diseases, such as rheumatoid arthritis and type 1 diabetes, T cells mistakenly attack the body's own cells. In other diseases, such as HIV/AIDS, the virus specifically targets T cells, leading to a weakened immune system.
See also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD