Blood type tells how they work blood cells, however, this knowledge was revealed to man only a few decades ago.
To be precise, in 1900, people finally understood why some blood transfusions were successful, while others ended in death for no reason known to science at the time.
The opening of the groups belongs to the physician Karl Landsteiner. He decided that the blood of different people differs in several factors. Later he managed to find specific components in erythrocytes, and the blood was divided into 4 groups.
Now medical science has sufficient knowledge about blood groups, for example, the number of carriers of each type is known!
Most often, 1 blood group is found (in 41% of the world's population), there is every reason to believe that it appeared earlier, and the other types were the result of natural mutations.The second group occurs in 32% of people, the third - in 22%, and the fourth accounts for only 5%.
Thus, the first group is the most common, and the fourth has become the rarest.
Recall
- lunar horoscope for February 6, 2020.
- scientists have named the blood type that attracts money.
- TOP facts about blood types that everyone should know.
