What is Regulatory T cell?
{{no sources|date=October 2023}} Regulatory T cell or Treg for short are a type of [[T cell]] that regulates the immune system to prevent [[autoimmunity]] when an activated white blood cell overreacts or goes out of control regulatory t cells signals the aggressive immune cell to calm down and forces it to deactivate it thus keeping the healthy tissues safe from an autoimmune disease {{biology-stub}} [[Category:Blood cells]]