Solved by a verified expert:What makes red blood cells unique, compared to other cells in the body? How is new blood made? What is the main function of platelets? Describe how the body stops bleeding. Sickle cells are named so because of their characteristic shape. What problems can this cause? Explain how the absence of a nucleus affects the RBC’s life span. What determines blood type? What type of blood antigens are expressed if a person is AB-? Why doesn’t a negative transfusion reaction occur the first time a Rh positive person is exposed to negative blood?very short answers