Regulatory T cells

Regulatory T cells
Regulatory T cells (Tregs), formerly known as suppressor T cells, are a subpopulation of T cells which modulate the immune system, maintain tolerance to self-antigens, and abrogate autoimmune disease.
Mouse models have suggested that modulation of Tregs can treat autoimmune disease and cancer, and facilitate organ transplantation.
Specifically, Treg cells maintain order in the immune system by enforcing a dominant negative regulation on other immune cells.

Know more:
http://intimm.oxfordjournals.org/content/21/10/1105.full
Regulatory T cells infographic via BioLegend