What Is ‘O Negative’ Blood?

O negative is a kind of blood group that you can find in human beings and it is among the rare blood groups to be found among the human beings. If you delve into the details of the nomenclature of the blood group, you will find that all the words that are being used in the name say something about the kind of blood that exists in that particular human being. The letter 'O' says about the group of the blood that is prevalent in the person and the negative sign says about the 'RH' factor prevalent in the person.

Other than the negative RH factor, you can also find the 'RH' factor that is positive and in terms of the blood group also there are two other variants exist. The variants are A and B.

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