What Are the Different Blood Types?

Have you ever wondered what exactly makes A-positive blood different from O-negative blood? Here is a quick tutorial from your trusted home care agency on blood types. All blood contains the same elements, but not all blood is the same. Human blood has red blood cells to carry oxygen. Plasma is the watery stuff that allows blood to flow. Blood also contains antigens that alert the immune system to possible foreign invaders, such as viruses or bacteria. These antigens can be seen on the red blood cell surfaces, in the plasma, in both or in neither. Scientists categorize blood into eight different categories, based on the presence or absence of antigens in the blood.
http://blog.alwaysbestcare.com/what-are-the-different-blood-types/

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