Transfused Blood Transfusions

We label them with a very, very small amount of radioactivity before we re-inject them. Over time, that reactivity will fade because those red cells will gradually disappear from circulation. As we measure the fade, that teaches an ideal long-do cell surviving circulation. This is absolutely transformational for patients who've got genetic disorders whose life really depends on being transfused regularly. At the moment, they are transfused every two to three weeks. We could potentially transfuse them every six to eight weeks.