Reference Terms
from Wikipedia, the free encyclopedia

T cell

T cells are a subset of lymphocytes that play a large role in the immune response.

The abbreviation "T" stands for thymus, the organ in which their final stage of development occurs.

Every effective immune response involves T cell activation; however, T cells are especially important in cell-mediated immunity, which is the defense against tumor cells and pathogenic organisms inside body cells.

Note:   The above text is excerpted from the Wikipedia article "T cell", which has been released under the GNU Free Documentation License.
Related Stories

Health & Medicine News
May 22, 2017

Latest Headlines
updated 12:56 pm ET