What do blood cells help you do?

Question: What do blood cells help you do?
- Keywords:
  blood,
  blood cell,
  cell
Asked by bigcheack to Hayley, Jason on 14 Mar 2013. This question was also asked by chocolate123.
- Hayley Evers-King answered on 14 Mar 2013:
  
  Red blood cells carry oxygen and carbon dioxide. White blood cells help support our immune systems to stop us from getting really sick and platelets help make blood sticky enough that it clots if we get cut!

Question: What do blood cells help you do?