The formation process of China people. The origin of type B blood?

Type B blood accounts for 20%, which is mainly caused by the integration of Huns, Turks, Nuzhen and others into the blood of Han nationality.

Type A accounts for 40%, mainly distributed in the south, and evolved from the integration of ancient nationalities such as Chu Miao and Naman into China;

Type AB is a hybrid of type b and type a.

Type O is a very old and earliest blood type, mainly distributed in the Central Plains, and its lineages are Huangdi and Dongyi.

Extended data:

The earliest known blood group system is ABO blood group system. 1900 Karl landsteiner of the Institute of Pathology, Vienna University, Austria, found that the serum of healthy people has agglutination effect on red blood cells of different human individuals.

If different people's serum and red blood cells are mixed in pairs, they can be divided into three groups: A, B and C (later renamed O). Later, his students Decastello and Sturli discovered the fourth group, namely Group AB.

A few years later, landsteiner and others discovered other independent blood group systems, such as MNS blood group system and Rh blood group system. 1930, landstein won the nobel prize in physiology or medicine.

For decades, new blood group systems have been reported continuously, and the International Blood Transfusion Association was established in 1935, responsible for identification and naming. The 30 recognized human blood group systems include more than 600 antigens, but most of them are very rare.

The discovery of blood type has created new disciplines such as immune hematology and immune genetics, which is of great significance to clinical blood transfusion. Blood group system is also widely used in forensic medicine and paternity test, but it is gradually replaced by more accurate genetic method. ?

Baidu encyclopedia-type b blood