What is my blood type? What blood type am I

How blood groups are formed, blood types are divided into four 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 gene and B gene are dominant, O gene is recessive, for example, a person's pair of genes is AA, then the blood type is A, such as a person's pair of genes is AO, because A gene is dominant, and O gene is recessive, so O gene can not show a role, this person's blood type is A, B gene is the same, such as when a pair of genes is AB, because B gene and B gene are dominant, this person's blood type is AB type, because O gene is recessive, It must be manifested when both genes are O, and it is blood type O.

That's a really difficult question for you, and none of your inspection reports let us know where to start.

Classification of blood groups.

There are two antigens on the surface of human red blood cells, namely A antigen and B antigen, and type A red blood cells contain A antigen on the surface; Type B red blood cells contain B antigen on the surface, type AB red blood cells contain both A and B antigens on the surface, and type O red blood cells contain neither A nor B antigens. In human serum, there are two types of natural antibodies, one called anti-A antibody and the other called anti-B antibody, which is contained in the serum of type A people.

B antibodies, which contain anti-A antibodies in the serum of people with type B, neither anti-A nor anti-B antibodies in the serum of people with type B, and anti-A and anti-B antibodies in the serum of people with type O. Both antibodies react immunally with the corresponding A or B antigens, respectively.

There are two methods for the identification of ABO blood group, one is to identify the antigen on red blood cells with standard type A, B, and O serum, which is positive stereotype; The other is to identify antibodies in serum with standard red blood cells A, B, and O, which is reverse stereotyped. It's best to do both when determining blood type to prevent mistakes.

1) Identification of blood type with standard A, B, and O types of serum: take 1 piece of glass slide or porcelain plate according to the required number, do a good job of numbering, and draw 3 equal grids. Then add a (anti.

B), B (anti-A), O (anti-A, B) type standard serum each drop. Add 1 drop to each of the subject's 10 red blood cell suspension. Mix well with a glass rod, rotate from time to time, observe the agglutination, under normal circumstances, 2 5 minutes can determine the report result.

2) Identification of blood type with standard type A, B, and O red blood cells: first add 1 drop of each of the 10 red blood cell suspension of type A, B, and O to the 3 equal grids of the slide or porcelain plate, and then add 1 drop of the serum of the subject to the standard red blood cell suspension of type A, B, and O respectively, mix well with a glass rod, rotate from time to time, observe the agglutination situation, and under normal circumstances, the result can also be judged within 2 5 minutes.