Scientists at the Walter and Eliza Hall Institute have isolated a sub-set of the regulatory T-cells that actually determine immune responses. The discovery is largely useful for diagnosing cancer, transplant reactions and autoimmune diseases at present but could help patients with weak or overly strong immune system responses, which are linked to cancer and autoimmune diseases. The research could also change the way the efficacy of newly developed drugs are tested.
Read more at Nature Immunology