Pronunciation: (… LIM-foh-site)
A type of white blood cell. T lymphocytes 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 cell 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.2006-02-07 Date last modified: 2014-10-28