The Rh protein can also either be present or absent. They are determined by the absence or presence of A and B antigens in the red blood cellsвЂ™ surface and A and B antibodies present in the blood plasma. 2: The Different Types Of BloodД«lood is usually grouped according to the ABO blood typing system, where the 4 major types are: Type A, Type B, Type AB, and Type O. Your blood type (or blood group) depends on what types your parents passed down to you. Your blood type is based on whether or not certain proteins are on your red blood cells. READ: HORSESHOE CRABS ARE DRAINED FOR THEIR BLUE BLOOD WORTH THOUSANDS OF DOLLARS, THIS PRACTICE WILL END SOON It is also done to see if you have a substance called the Rh factor on the surface of your red blood cells. Such a thing is done so that one can safely donate their blood or receive a safe transfusion. 1: How Are The Blood Types Determined?Д«lood typing is a process by which you can find out your blood type. Let us look at all the things that were have found out about the different types of blood and interesting facts about Blood Type O. It was later found out that the characteristics of blood can affect oneвЂ™s health, fortune, and even personality. These transfusions were the cause of many deaths due to the incompatibilities. The Austrian physician proved that it was important to know oneвЂ™s blood type for safer transfusions, as blood matches were crucial.Д«efore the discovery of blood types in 1901, people were receiving blood transfusions regardless of blood type.

Human blood was initially classified into 4 types by Karl Landsteiner. Before we go into the few things that you should know about Blood Type O, let us talk about human blood in brief and look at the other types of blood.

O negative blood type facts