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they are blood types
some types of proteins are enzymes, hemoglobin, antibodies, and blood proteins. hope i helped :)
There are three types of proteins that are found in the plasma of blood. They are albumin, globulins, and fibrinogens.
blood types are determined by proteins know as maker molecules
The correlation between people's blood types and their personalities has been proven false. It is a myth that people created long ago and has survived to this day. Blood types are determined by certain proteins on the surface of a red blood cell and these proteins do not affect a person's personality in any way.
When the body encounters types of blood it is not familiar with, it makes antibodies to attack it. That's why O- is the universal donor. O means it has neither A or B components, and the negative means it does not have specific receptor proteins on it. That's also why someone AB+ can have any type of blood, because the body is used to A components, B components, and receptor proteins.
Different proteins cause different blood types. A and B are two different proteins, as is M and N. O is the absence.
Agglutunation
Karl Landsteiner
I don't know but they drink wine mixed with bull blood
The four blood types are a, b, ab, and o. O is known as the universal donor because it has no proteins, so it can be given to any other blood type without harming it. AB is known as the universal recipient because it can receive any other blood type but can't give any away because it has a mixture of proteins.
I believe type O blood is the one blood type that can be matched to any of the other blood types. There is one type of blood, though, that is not compatible with type O blood. However, that is very rare.