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4 Written questions

3 Multiple choice questions

  1. discovered why blood transfusions didn't always work; he found that blood is not all the same and that there are several types of blood
  2. people who donate blood
  3. help fight disease and infection

3 True/False questions

  1. plateletssmall fragments of cells; they help form blood clots


  2. blood transfusionpeople who donate blood


  3. four main types of bloodto transport substances around the body, to keep the body's temp. at 37 degrees Celsius, and to help defend the body against infections and diseases