In reality a person with Rh- blood can develop Rh antibodies in the blood plasma if he or she receives blood from a person with Rh+ blood. The fact that people with Rh- blood do not naturally have Rh antibodies in the blood plasma (as one can have A or B antibodies, for instance) is not taken into consideration in this game. The blood type notation O Rh+ indicates which antigens and antibodies are present in the blood.

(If there are Rh antigens but no A nor B antigens, the antibodies present in the blood plasma are A and B antibodies.) (0 indicates there are neither A nor B antigens.) The blood type notation O Rh- indicates which antigens and antibodies are present in the blood. (If there are no antigens at all on the surface of the red blood cells, all three possible antibodies are present in the blood plasma: A, B and Rh antibodies.) (O indicates there are neither A nor B antigens.) Type O blood gets its name because it has neither A nor B antigens! In other languages O is often pronounced as 'null'. The blood type notation AB Rh+ indicates which antigens and antibodies are present in the blood. (If all possible antigens are present, A, B and Rh antigens, there are no antibodies in the blood plasma.)

The blood type notation AB Rh- indicates which antigens and antibodies are present in the blood. (If there are A and B antigens but no Rh antigens, the antibodies in the blood plasma are Rh antibodies.) The blood type notation B Rh+ indicates which antigens and antibodies are present in the blood.ДЄB indicates there are both A and B antigens. If there are B and Rh antigens but no A antigens, the antibodies in the blood plasma are A antibodies. The blood type notation B Rh- indicates which antigens and antibodies are present in the blood. (If there are B antigens but no A nor Rh antigens, the antibodies in the blood plasma are A and Rh antibodies.) (Rh- indicates there are no Rh antigens.)

The blood type notation A Rh+ indicates which antigens and antibodies are present in the blood. If there are A and Rh antigens but no B antigens, the antibodies in the blood plasma are B antibodies. The blood type notation A Rh- indicates which antigens and antibodies are present in the blood. (If there are A antigens but no B nor Rh antigens, the antibodies in the blood plasma are B and Rh antibodies.) You can have A or/and B or/and Rh antibodies or none of them.ДЄntigens (on the surface of the red blood cells): You can have A or/and B or/and Rh antigens or none of them. The antigens expressed in the red blood cells determine an individual's blood type.ДЄlso the combination of some other molecules floating around in the blood plasma differs between the eight blood types, the so called antibodies. The A and B antigens are sugars and the Rh antigens are proteins. The eight blood types have different combinations of certain molecules, antigens, on the surface of the red blood cells. People belong to either of eight different blood types:ДЄ Rh+, A Rh-, B Rh+, B Rh-, AB RH+, AB Rh-, 0 Rh+, or 0 Rh. Our blood types are determined by heredity. The plasma contains salts and various kinds of proteins. The platelets help the blood to clot, if you get a wound for example. One type of infection-fighting white blood cells fight disease by producing antibodies and thus destroying foreign materia. Red blood cells transport oxygen to, and remove carbon dioxide from, the body tissues. The red blood cells contain hemoglobin, a protein that binds oxygen. This is a scanning electron microscope image of human blood. Image source: National Cancer Institute, USA.

Among other things, blood transports oxygen to various parts of the body.Д«lood consists of several types of cells floating around in a fluid called plasma. What is blood made up of?ДЄn adult human has about 4вЂ“6 liters of blood circulating in the body. The designation Rh is derived from the Rhesus monkey in which the existence of the Rh blood group was discovered. There are many blood group systems known today, but the ABO and the Rh blood groups are the most important ones used for blood transfusions. Later, in 1940, Landsteiner was part of discovering another blood group, the Rh blood group system. This misunderstanding led to fatal blood transfusions. Before Nobel Prize awarded Karl Landsteiner discovered the ABO human blood groups in 1901, it was thought that all blood was the same.

Blood typing