http://www.sci-news.com/medicine/vitamin-c-immune-cell-function-09885.html
Regulatory T cells (Tregs) help control inflammation and autoimmunity in the body. These cells are so important that scientists are working to generate stable induced Tregs (iTregs) in vitro for use as treatments for autoimmune diseases as well as rejection to transplanted organs. Unfortunately, it has proven difficult to find the right molecular ingredients to induce stable iTregs. Now, a team of U.S. researchers has found that vitamin C and proteins of the TET family can work together to give Tregs their life-saving power.