Blood Types
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A positive a negative b positive b negative ab positive ab negative o positive and o negative.
Why are blood types important.
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Blood types. Your blood type is a combination of these two systems. There are eight main blood types organised through two combined systems. Learn more about the different types of blood including which one is the rarest and the role of genetics in determining your blood type. These systems are abo blood types a b ab or o and rh type or group positive or negative.
Blood types are determined by the presence or absence of particular antigens on the surface of red blood cells. In addition to abo and rh there are 34 other recognised blood types called. There are eight main blood types. For example the surface of red blood cells in type a blood has antigens known as a antigens.
For example by percentage of population the most common blood type in australia is o positive and the least common is ab negative. In addition to the a and b antigens there is a protein called the rh factor which can be either present or absent creating the 8 most common blood types a a b b o o ab ab. These antigens may be proteins carbohydrates glycoproteins or glycolipids depending on the blood group systemsome of these antigens are also present on the surface of other types of cells of. Blood is a lot more complex than it looks.
Human blood is grouped into four types. The positive and negative refers to your rh type once called rhesus.