為了緩解O型血-通用血型的緊張狀況，科學家們開始研究是否可以把其它的血型的血轉換成為0型血
Scientists may have found a way to reduce shortages of type O blood. Type O is the kind of blood that hospitals most often need. What the researchers are testing is an easier way to make type O blood out of other kinds of blood. There are 4 main blood types. Most people are born with one of these f…