Good artificial blood! They transfused red blood cell synthesis

This is a first! French researchers (Cocorico) managed to make red blood cells derived from stem cells, then the red blood cells for transfusion to a human, not that he dies, turning into a zombie or fly! Why is this important?

First, red blood cells represent 85% of transfusion requirements. And as long as you do not need, you can not you know it or remember the importance of donating blood,