What blood type is the rarest and rarest blood type The rarest blood type is introduced

1. Rh-negative blood. 2. There is no fixed requirement for the blood type of the parents.

1. The rarest blood group is the P blood group system, the P blood group system is an independent blood system, different from the ABO Rh blood group, the P blood group system is divided into five types of p1, p2, p1k, p2k, p blood group and so on according to whether the red blood cell membrane contains p1 antigen, among which p blood type is the least blood group.

2. Although the blood type P is the least, this is due to the obvious antigenicity of the blood type P, so people with this blood type can only accept the blood type of P blood, and if the blood of other blood types is transfused, a serious hemolytic reaction will occur. Because of this, people with blood type P often encounter difficulties in blood source when using blood in clinical practice, so blood type P is the least type in the human blood group system.

In general, the rarest blood type is AB-negative and the most common is O-positive. Here are the rarest and most common blood types by ethnicity, according to the American Red Cross.

o Positive: African American: 47% Asian: 39% Caucasian: 37% Latinosian: 53% o Negative:

African American: 4% Asian: 1% Caucasian: 8% Latinos: 4% A-positive:

African American: 24% Asian: 27% Caucasian: 33% Latinos: 29%.

A Negative: African American: 2% Asian: Caucasian: 7% Latinas: 2% B Positive:

African American: 18% Asian: 25% Caucasian: 9% Latin American: 9% B-negative:

African American: 1% Asian: Caucasian: 2% Latin American: 1% AB positive:

African American: 4% Asian: 7% Caucasian: 3% Latin American: 2% AB negative:

African American: Asian: Caucasian:

1% of Latinos: A person's blood type depends on whether they have a certain molecule or protein (called an antigen) on the surface of their red blood cells, according to the National Institutes of Health. The two main antigens used for blood typing are called "A antigens" and "B antigens", with people with blood type A having only the A antigen on their red blood cells and people with blood type B having only the B antigen.

People with blood type AB have both, and people with blood type O have neither.

Another protein, the "rh factor" (also known as the "rhesus" system), is also present or absent on red blood cells. A person's blood type is designated as "positive" if they have an Rh protein on their red blood cells and "negative" if they do not have an Rh protein.

According to the Red Cross, a person's blood type is hereditary, inherited from his or her parents.

Blood type is especially important for blood transfusions because certain antigens on blood cells can trigger a person's immune system to attack blood donations.

Rh-negative people can only receive Rh-negative blood, but Rh-positive people can receive either Rh-positive or Rh-negative blood, the Red Cross said.

More importantly, blood type A can be used for transfusions of blood type A or AB; Blood type B can be used for transfusions of blood type B or AB; AB blood type can be used for blood transfusions of AB blood type. According to the Red Cross, people with blood type O are called "universal blood donors" because this type of blood can be used for patients of any blood type.

Blood type O is often in short supply in hospitals because of the demand for this universal blood donor. In particular, blood type O is in high demand, as it is the blood most commonly used in emergencies, as there may not be time to determine the patient's blood type.

11 Surprising facts about the immune system Blood color: Here are the reddest reds in nature (**) 9 rare cases that pregnancy may initially bring "kdsp" published in Live Science.

AB blood type is relatively scarce.

Among the ABO blood types, blood types A, B and O each account for about 30%, and AB blood types account for only about 10%.

In 1901, geopathologist and immunologist Carl Landsteiner proposed the idea that there are different types of blood. The ABO blood group system is mainly named according to the different agglutinogens contained on the surface of human red blood cells, that is, blood group antigens, including A, B, and H.

The red blood cells of all four blood groups contain a small amount of H antigen, and the red blood cells of type O blood have only a small amount of H antigen on the thick segment. The H antigen is the structural basis for the formation of A and B antigens, but the antigenicity of H substances is very weak, so there is generally no anti-H antibody in the serum. ABO blood group antigen is a glycolipid whose oligosaccharide moiety has a role in determining antigen specificity.

Blood group is a method of classifying blood, usually referring to the classification of red blood cells, based on the presence of certain heritable antigenic substances on the surface of red blood cells. There are 30 blood group systems that have been discovered and recognized by the International Blood Transfusion Association, the two most important of which are the "ABO blood group system" and the "RH blood group system".

Of the four most common blood types (A, B, O, AB), AB type is the least;

It is the presence of Rh antigen (also known as D antigen) on the red blood cells of human blood, which is called Rh positive. As a result, the four main blood types of red blood cells A, B, O, and AB have been found to be divided into two types: Rh-positive and negative.

In our country, Rh-negative blood type accounts for only three to four per thousand. The ratio of Rh-negative type A, B, O, and AB is 3:3:3:1.

HR type, which is said to be only available to ethnic minorities.

Rh-negative, which very few people have.

Generally, our more common blood types are blood type A, blood type B, blood type AB and blood type O. Do you know rare blood types?

With the development of the times and the progress of society, blood group testing is becoming more and more common, even if you have not been to the hospital for testing, there are now mobile blood donation stations, blood donation houses, blood donation vehicles, and blood collection and supply institutions will regularly arrange blood collection vehicles to schools, units, dense areas, or cooperate with the activities of relevant institutions.

Blood 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.

A rare blood type is a rare or rare blood type. This blood type is not only present in the ABO blood group system, but there are also some rarer blood groups in the rare blood group system. With the in-depth study of blood group serology, scientists have established rare blood group systems such as RH, MNSSU, P, KELL, KIDD, Lutheraan, Deigo, Lewis, Duffy and a series of other rare blood group systems.

There is also a rare blood group system called the Bombay type, in which the red blood cells do not have A, B, and H antigens, but there are three antibodies A, B, and anti-H in the serum.