A transfusion is the process of transferring blood or blood-based products from one person into the circulatory system of another. Blood transfusions can be life-saving in some situations, such as massive blood loss due to trauma, or can be used to replace blood lost during surgery. Lt. Colonel John Sheppard required a transfusion after being injured when Michael's facility collapsed but refused to until he rescued Teyla Emmagan. (SGA: "Search and Rescue")

External linksEdit
