Blood Transfusions Blood types become very important when a blood transfusion is necessary. If the blood types are not compatible, red blood cells will clump together, making clots that can block blood vessels and cause death. Blood type is inherited, just like eye color. Certain blood types are more common in certain countries. Different kinds of animals have different kinds of blood.
Some people think blood type tells about personality.
The Learning Network Inc. All rights reserved. Inc. All Rights Reserved.