ABO blood grouping system: Blood is classified into 4 blood groups based on the presence or absence of antigens A and B on the red blood cell membranes – A for antigen A only, B for antigen B only, AB for the presence of both A and B antigens, and O for the absence of both antigens. Blood type changes when it is said to change! You are afraid to put you on the shelf, you are not? Recently, Changchun, a girl’s medical report, scared parents. The girl was born in December 2010, the recent medical examination measured blood type A, while 2.5 years old measured B! Can a normal person’s blood type really change just like that? The blood type of this matter, or quickly understand the good ↓ ↓ ↓ blood type is what? Usually we say that the blood type is the type of specific antigen on the red blood cell membrane, categorized as red blood cells ABO blood type system and Rh blood type system. ABO blood group system: according to the presence of antigen A and antigen B on the red blood cell membrane will be divided into four blood types – only antigen A for type A, only antigen B for type B, the presence of both A and B antigens for type AB, both antigens are absent for type O. Rh blood group system: when a person has a red blood cell membrane antigen, he or she is classified into four blood groups: ABO blood group system and Rh blood group system. Rh blood group system: when a person’s red blood cells on the presence of a D blood group antigen, it is called Rh positive; the opposite is Rh negative. As a blood type system, more than 99% of Chinese people have Rh-positive blood, and Rh-negative blood is very rare, also known as “panda blood”. Can blood type change just like that? Normally, blood type is formed at birth and remains unchanged throughout life. But there are some very special circumstances, can also be changed: infants and young children, red blood cells are not yet mature, the blood group antigen is not fully developed; the elderly and patients with malignant tumors, red blood cell antigenicity is weakened; patients receiving radiation therapy, resulting in genetic changes in the red blood cell system; some patients suffering from intestinal obstruction or gastrointestinal tract tumors, the occurrence of the blood type cross; a large number of dextran and other colloidal solutions, adsorption of red blood cell surface antigen; (Of course, the red blood cell surface antigen is not always the same. Surface antigen; (Of course, there is another situation blood type can also change, that is: test! Wrong! Wrong!) What are the consequences of having the wrong blood type? If you just want to know your blood type, it’s not a big deal to get it wrong! But if there is a need for a blood transfusion, the consequences of getting the blood type wrong are serious! Test wrong blood type, will lead to patients enter a different type of blood, hemolytic reaction (red blood cell membrane destruction, resulting in hemoglobin from the red blood cell out of the reaction), serious cases can be fatal. However, in regular hospitals, patients who need blood transfusion, basically will be cross-matched (the donor’s red blood cells and serum were mixed with the recipient’s serum and red blood cells, to see if there is no agglutination reaction), can generally guarantee safety. Can blood type really affect personality? Among a large number of assertions about the influence of blood type, the one you hear the most is that “blood type affects personality”. But the answer to this claim is: it’s not true! The latest research continues to prove that blood type and personality are not necessarily linked. “The blood type personality claim is a false proposition, a bit like ‘racism’, a form of prejudice and discrimination that creates unfounded personality comparisons between people.” Blood type affects health! However, according to Xiao Xin to check the information, experts say: blood type is quite related to health! A large number of clinical practice has proved that people with different blood types have different rates of various diseases. Such as A-type blood, the blood viscosity elevation has a greater susceptibility to infection, easy to induce cerebral infarction, stroke and other diseases; B-type blood people, suffering from tuberculosis, leukemia and other ratios higher than other blood types; O-type blood people, easy to suffer from hepatitis B, gastric ulcers, less likely to suffer from cardiovascular disease; AB-type blood people, easy to suffer from coronary heart disease, and once the heart is hurt, the occurrence of myocardial infarction ratio is also significantly higher.