in Lymphatic System and Immune System by

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Lymphocytes are central to specific defenses and classified into two types, B lymphocytes (B cells) and T lymphocytes (T cells). Both lymphocytes play important roles in the body’s immune system.

Characteristics of T Cells

  • T cells are made in the bone marrow but get matured only after travelling to the Thymus.
  • T cells do not produce antibodies.
  • T cells are responsible for cell-mediated immunity.
  • T cells can target and selectively destroy virus-infected cells and cancer cells.
  • Helper T cells secrete cytokines which release chemicals to regulate the immune response.
  • There are some T cells for example, Cytotoxic T cells directly kills infected cells or some other intracellular pathogen (non-self antigen-bearing cells).
  • T cell receptors do not recognize whole antigens, but instead react only to small fragments of antigens.
  • T cells = Helper T cells, Memory T cells, Cytotoxic T cells and Cytokines

Also read Lymphocytes