The photoreceptors that allow you to perceive colors are called , and the receptors

The presence of antigen on the surface of the red cell supports the classification of the ABO blood group system.

Further Explanation:

The Austrian immunologist Karl Landsteiner was the first person to discover the ABO blood group system in 1901. In the process of understanding the reason behind the cause of death after blood transfusion, he made a discovery.

The A and B type antigens are present on the surface of the red cell(erythrocyte) and the opposite antibodies are present in the serum. The blood group is divided into four principle type namely; type A, B, O, and AB. There are two types of antigen and two types of antibodies that are responsible for all the blood types. If the blood group of an individual is type A, so the person will have type A antigen and type B antibodies. The person with the ABO blood group does not have any antigen (neither A nor B).

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Answer Details:

Grade: High school

Subject: Biology

Chapter: Blood cells

Keywords:

Antigen, Blood, group, characteristic, erythrocyte, antigen, antibodies, immunologist, serum, discovered.