Occasionally, a baby will need a special type of blood transfusion called an exchange transfusion to reduce very high bilirubin levels. In this procedure, some of the baby's blood is removed and replaced with blood from a donor. Keeping warm. Babies who are born too small and too soon often have trouble controlling their body temperature. See the facts below the blood vessel to answer the questions below. Click on red-yellow circle "where is blood made?" 1. Where are blood cells made? _____ 2. True or False: White b lood cells can leave the blood vessels and travel into your tissues. Why would this be an advantage? _____ _____ _____ Click on blood bag type "A" 3. What are the ...