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What are the 4 types of T cells?

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Why is it called T cell?

The immune system is a complex and vital part of the human body, and T cells are a crucial part of that system. T cells are white blood cells that help protect the body against infection and disease. They do this by identifying foreign invaders, such as viruses and bacteria, and attacking them.T cells get their name from the thymus, a small organ located in the chest. The thymus is where T cells mature and are educated in how to recognize foreign invaders. Once they leave the thymus, they circulate throughout the body, ready to fight infection.There are two main types of T cells: helper T cells and cytotoxic T cells. Helper T cells provide support to other immune cells, including cytotoxic T cells. Cytotoxic T cells directly kill infected or cancerous cells. Both types of T cell are essential for a healthy immune system.

What is T cell and B cells?

The immune system is composed of many different types of cells that work together to protect the body from infection. Two important types of cells in the immune system are T cells and B cells.T cells are involved in cell-mediated immunity, which means they help to kill infected cells. T cells can also produce chemicals that help to destroy bacteria and viruses. B cells are involved in humoral immunity, which means they produce antibodies that bind to and destroy bacteria and viruses. Antibodies are proteins that are produced by the body in response to an infection.Both T cells and B cells are important for protecting the body from infection. T cell-mediated immunity is particularly important for protecting against viral infections, while humoral immunity is important for protecting against bacterial infections.

Where are T cells located?

T cells are located in the lymph nodes and spleen, where they help to fight infection. They are also found in the blood, where they circulate around the body looking for pathogens. When a T cell encounters an infected cell, it will bind to it and release chemicals that kill the pathogen. T cells can also remember previous infections, so that they can more quickly respond to future infections with the same pathogen.