What is the most rare blood type?

globally, the most precious common blood type AB is negative, followed by B negative. In addition to the ordinary grouping system, there are many other types of blood that are rare or specific only for narrow demographic groups. There are also several diseases with rare or mutated antigens, which are molecules of surface signaling on blood cells that give individuals incredibly unique types of blood species.

The most commonly used category for blood is abo grouping that classifies them with blood according to the presence of antigens, or one of them, or one of them, or one of them, or one of them, or one of them, or one of them, or one of them, or usually codes or one or one of them, or one or one or one or one of them or one or one sequence. which is referred to as O. Those who have one copy of A or B and one copy of o are still said to have a blood type A or B, while only those who have twoCopies O, it is said that they have a blood type O. Despite this fact, the most common blood type, while AB is the most addicted blood type.

In addition, the group Rhesus (RH) classifies blood on the basis of whether blood cells have a factor of RH, other antigen is commonly found on the cell surface. For example, in the United States, only about 18% of white Americans, 7.3% of African Americans and Hispanics, and 2% of Asian Americans RH are negative. The remaining percentage of the united States population is RH positive and contains antigen. Combined with the ABO system, AB is negative and B negative the most precious overall types of blood.

For these simple group systems that apply to a large percentage of the population, there are more than 600 other specialized surface antigens. Individuals in some ethnic groups will contain more similarities with respect to these antigens and some specific groups are experiencing a more rare blood type. Therefore, gifts of blood and transfuze from patients a direct ethnic background can reduce the likelihood of complications or rejection.

There are also several diseases that could result in some of the most important blood type expressions, including McLeod syndrome, genetic disorders or the absence of Duffy antigen, which is more common in populations that experience a higher degree of malaria. It is also possible for an individual's blood type to change during his life. Blood transfusions and transplantation, especially bone marrow transplantation, can gradually change the individual type of individual into a blood type of donor. Bone marrow transplantation contains precursors that eventually create new blood cells, increasing the blood -type concentration over time.