Pronunciation: (... sel)
A type of white blood cell. T cells are part of the immune system and develop from stem cells in the bone marrow. They help protect the body from infection and may help fight cancer. Also called T lymphocyte and thymocyte.
Source: NCI Dictionary of Cancer Terms
Caption: Blood cell development. A blood stem cell goes through several steps to become a red blood cell, platelet, or white blood cell.Date last modified: 2014-10-28