God has favor with the immune system our most sophisticated method for determining whether a substance in the body is a foreign object or not. One method involves the search of a chemical called antigen, found on cells in our bodies and most living creatures. One method involves the search of a chemical called antigen, found on cells in our bodies and most living creatures. Every substance can become antigen. The only prerequisite to be able to become antigen is a substance is quite unique, so immune system can determine whether the substance including the “self” or “not self” aka foreigners.
All forms of life, from a simple virus to humans, has a unique antigen that becomes a kind of “chemical fingerprints”. One of the many antigen in our bodies is the antigen to be determines blood type. When your immune system tries to identify suspicious that a newcomer, one of the first things is look at your blood group antigen.
Each blood type is determined by the presence or absence of antigen with the specific chemical structure which is a long chain of confectionery called fukosa. This form antigen O antigen in the blood of your diversified O. Fukosa also served as the basis of other blood group. A blood type is arranged on fukosa, added with a sugar called N-asetil galaktosamin. Blood group B have fukosa added a different sugar called D-galaktosamin.
Each blood group antigen antibody to create a mutually opposite blood group antigen with the other. Antibody blood type is often called isohemaglutinin because we made a lifetime and is the IgM antibody, which can directly herd antigen. This antibody is the antibody that is very powerful! Isohemaglutinin the role of the most well known can be seen in blood transfusion reactions. This reaction occurs when someone inadvertently and give the wrong blood type in a transfusion. This process can become serious. Someone who received a blood transfusion that is not appropriate to have a fever, shivering, cold, short-short breath, biduran, and vomiting. Shock, kidney failure, or blood koagulasi and even death can occur, although rarely.(Source: allergies: Fight Them with the Blood Type Diet)