Adult

• comes from bone marrow- produces cells
• can change into SOME cell types, but not all
• produces- red blood cells (carry oxygen), white blood cells (fight infection), platelets (help blood clot)
• white blood cells- engulf bacteria and produces antibodies
• Advantage


  no one dies, tried and tested, use your own cells, no rejection, gives consent
• Disadvantage


  painful, risk of infection and rejection