<http://schema.org/description>
"The immune system produces diverse varieties of T cells (Fig. 1), such as pathogen-destroying cytotoxic T cells and immune response-boosting helper T cells. Regulatory T (Treg) cells restrain these other cells and prevent the body from overreacting to threats or generating a dangerous autoimmune response."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2012-07-immune-cell-career-path.html>