While transfusions are common, there's a lot more to them than just taking blood from one person and using it to help someone else. It's very important to keep the blood supply safe. So, each unit of blood goes through many tests to check for infectious diseases and establish the blood types.
It might seem like blood is blood — it all looks pretty much the same to the naked eye. But although all blood contains the same basic components (red cells, white cells, platelets, and plasma), not everyone has the same types of markers on the surface of their red blood cells. These markers (also called antigens) are proteins and sugars that our bodies use to identify the blood cells as belonging to our own system.
Blood cell markers are microscopic. But they can make the difference between blood being accepted or rejected after a transfusion. So medical experts group blood into types based on the different markers.
The four main blood groups are:
Type A. This blood type has a marker known as "A."
Type B. This blood type has a marker known as "B."
Type AB. The blood cells of this type have both A and B markers.
Type O. This blood type has neither A or B markers.
In this application you will learn about:
• What is Blood?
• What does blood do?
• What is a blood group?
• Where is blood made?
• What is normal blood made up of?
• Most Common Blood Types
• Problems with blood groups
• Blood Types and Personality
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