they are blood types
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The blood proteins A and B are antigens found on the surface of red blood cells that determine blood type. Individuals with blood type A have A antigens, while individuals with blood type B have B antigens. Blood type AB individuals have both A and B antigens.
The human blood group that lacks proteins in the red blood cells is the O blood group. This means that individuals with type O blood do not have the A or B antigens on their red blood cells.
Iron, vitamin B 12 and B vitamin folic acid produce red blood cells
Blood alleles refer to the different forms of genes that determine the blood type of an individual. There are three main alleles that determine blood type: A, B, and O. For example, if a person inherits an A allele from one parent and an O allele from the other parent, their blood type will be A.
To type blood to detect ABO and Rh blood groups, a blood sample is collected from a vein in the arm. The blood is then mixed with antibodies that are specific to each blood group (anti-A, anti-B, and anti-Rh). If the blood clumps or agglutinates when mixed with a particular antibody, it indicates the presence of that antigen on the red blood cells, determining the individual's blood type.
red blood cells. These surface proteins determine an individual's blood type by reacting with antibodies in the blood. The most well-known blood group system is the ABO system, which classifies blood into types A, B, AB, and O based on the presence or absence of certain antigens.