Blood groups, which are determined by the presence or absence of different antigens in our blood group, are actually quite a complex and mysterious subject. A blood type that was unexpectedly discovered 30 years agoreveals that there may also be blood types we’ve never heard of.

“EpilepsyYou will be quite surprised when you hear the story of the emergence of this blood type called ”.

In blood groups, there are hundreds of different antigens found on our red blood cells, and these antigens play a role in determining the names of the groups.

However, apart from these known blood group systems, in our blood, if there is no antigen that most people have in common, or, conversely, an antigen that most people do not have It is possible that we have a blood type that we have not heard of before, which is called “rare”.

If the blood in our body contains a rare antigen and blood belonging to a group that does not have this antigen is transferred to the patient’s body, then this transferred blood will be naturally present in the body. a foreign substance and will cause different reactions.

As an example of this situation, researchers in the 1990s accidentally analyzed the blood of a young girl named Sarah and came across several reactions in the blood.

At the end of detailed examination, in Sarah’s red blood cells, a new antigen never seen before had been discovered. This was caused by the change of a single nucleotide in the young girl’s DNA sequence, which codes for glycophorin A, one of the major proteins on the surface of red blood cells.

Then the researchers began to analyze the blood of the young girl’s parents and all next of kin. These antigens in Sarah were also present in the family blood and Dedicated to Sarah, this blood type is “Sara” given name.

By freezing and preserving this unique blood, the researchers described this unprecedented case of Sarah and her family as “family blood grouphe called it.

About 10-15 years after this event, a Canadian mother lost an excessive amount of blood during childbirth and some tests were performed on the mother and baby to ensure blood supply.

It was found that there was a blood incompatibility in the baby and this situation was analyzed in detail. The mother’s plasma was tested against more than 50 rare rare panels, and this blood was alone Reacted with cells belonging to the Sara blood group.

The test results indicated the presence of anti-Sara antibodies in the maternal blood and the mother was found to be Sara negative. So these antibodies, attacked the baby’s Sara-positive cells.

For example, the Sara blood group is now officially recognized by the International Blood Transfusion Association.

In summary; surprisingly another blood type was discovered based on 2 people living on different continents and their families, and this blood type was unique for only two families in the world went down in history.