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, phlebotomists separated plasma from blood and used it to infuse patients with liver disease. Red blood cells would be used to transfuse cancer patients, or white blood cells for patients with anemia, or to aid chemotherapy. (replacing bad blood cells with good blood cells. The largest group of people receiving blood transfusion is primarily cancer patients, accounting for the largest number of 29% of blood products used specifically, whether this or during surgery The fact that blood can be separated into several parts is the main reason why so many people benefit from blood transfusions. Unfortunately, even though people use on average forty-two thousand different blood components. per year, only 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. Additionally, some research shows that in the next ten to fifteen years, scientists hope to grow blood in agar plates. As technology advances and the number of people needing a transfusion increases, scientists experiment with new ideas, just as James Blundell first did in 1818, and although the idea may seem scandalous today, in ten to thirty years it could become just as common. according to what people know