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Anonymous users2024-02-09Blood type refers to the type of antigen on the surface of blood components, including red blood cells, white blood cells, platelets. The blood group usually refers to the specific antigen type on the red blood cell membrane, and it is most closely related to clinical practice, and people are familiar with the red blood cell ABO blood group system and the RH blood group system.
ABO blood type.
ABO blood group is a blood group that divides blood into 4 types based on the presence or absence of antigens A and B on the red blood cell membrane. Only antigen A is type A on red blood cells, only antigen B is type B, and if there is both A and B antibodies, the principle is AB, and those without both antigens are type O. People with different blood types have different antibodies in their serum, but they do not contain antibodies against their own red blood cell antigens.
For example, blood serum with type A contains only anti-B antibodies. Among the people of all ethnic groups in China, blood type A, B and O blood types account for about 30% each, and AB type only accounts for about 10%.
Rh blood type. Human red blood cells that have the same antigen as rhesus macaques are called rh-positive blood groups, and those that do not contain this anti-gene are called rh-negative blood groups. Among the Han and most ethnic minorities in China, about 99% of the people are rh-positive, and only about 1% are rh-negative.
The Rh blood group system is the most complex type of red blood cells, and more than 40 kinds of Rh antigens have been discovered, among which the D antigen is the most antigenic, so it is common to call the red blood cells containing D antigen as Rh positive, and the lack of D antigen on red blood cells is called Rh negative.
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Anonymous users2024-02-08According to whether the red blood cells have A or B antigens, the antigens are dropped into the same amount of blood, anti-A or non-anti-B is blood type B, anti-B is not anti-A blood type, both are resistant to AB type, if they are not resisted, it is type O, and ABO blood group is distinguished in this way. If the two couples are negative and positive, the fetus may be stillborn due to hemolysis. In China, most Han Chinese are positive, and ethnic minorities are mostly negative.
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Anonymous users2024-02-07Regardless of whether the blood is boiling or cold-blooded and ruthless, everyone's blood type is nothing more than those types. eyeopenerToday's topic, what is blood type?
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Anonymous users2024-02-06Normal people have four blood types: type A, type B, type O, and type AB, which is the so-called "ABO system". But scientists later discovered that there is more to blood type than just one system.
There are four types of blood types, namely A, B, AB, O. Blood type refers to the antigens contained in red blood cells, red blood cells containing only A antigen are called type A, those containing B antigen are called type B, those that have both A antigen and B antigen are called AB type, and those that do not have either A antigen or B antigen are called O type.
ABO blood group is controlled by three genes of ABO, gene A controls the production of antigen A, gene B controls the production of antigen B, gene O does not produce antigens A and B, and genes exist in pairs, and the genes that control ABO blood group can have six different combinations, namely AA, AO, BB, BO, AB, OO, and each person only has one of them.
ABO blood group genes are also divided into dominant and recessive, A and B genes are dominant, and O gene is recessive, for example, if a person's pair of genes is AA, then the blood type is A.
For example, if a person's pair of genes is Ao, because the A gene is dominant and the O gene is recessive, so the O gene cannot show the effect, the person's blood type is type A, and the same is true for the B gene, such as when a pair of genes is AB, because the B gene and the B gene are dominant, the person's blood type is AB, because the O gene is recessive, it must be manifested when both genes are O.
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Anonymous users2024-02-05What is the concept of "good"?
How about the corresponding person? Or is it simply convenient to donate blood?
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Type A. I also like her very much.,I'm from the top sticker group.,Welcome to join.。