And more than forty-two thousand patients are treated with blood or blood products in New Zealand each year (NZ Blood, 2016). As medical technology advanced, draws would separate plasma from blood and use it to infuse patients with liver disease, red blood cells would be used to transfuse in cancer patients, or white blood cells in patients with anemia , or to help with chemotherapy. (replacement of bad blood cells with good blood cells. The largest group of people who benefit from blood transfusion are primarily cancer patients, who make up the largest number (29%) of blood products used specifically, both during surgery.The fact that blood can be separated into multiple parts is the main reason why so many people benefit from blood transfusions. Unfortunately, although people use on average forty-two thousand different blood components per year, alone one hundred and twenty-five thousand units of blood per year are collected in New Zealand (NZ Blood, 2016). Today, scientists use stem cells to generate new blood in the patient's body, and some research shows that in the next ten to fifteen years, scientists hope. of growing blood in agar plates, as technology advances and the number of people needing transfusions increases, scientists are experimenting with new ideas, just as James Blundell first did in 1818, and although the idea may seem scandalous now, in ten or thirty years it could be just as common, depending on what people know