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Because there are no antigens present on te blood cells and so the recipient cannot launch an immune response against it no matter what antibodies they express.

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14y ago
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13y ago

O blood type can be given to all other blood types because type O blood is recessive, and can be masked by other blood types.

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9y ago

Because they can donate to a person with any blood group.The blood group is O negative.

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Q: Why is O negative the universal blood type?
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Related questions

Which blood type is the universal blood type?

Type O negative blood is a universal donor blood type. In normal circumstances, anyone can receive type O negative blood in a transfusion. When it comes to plasma donation, type AB positive is a universal donor.


What is the unversal donor blood type?

Type O negative.


What blood type is the universal doner why are they called this?

O negative is the universal donor. This means that anyone can have a transfusion of O neg, despite their blood type.


What blood type is the universal recipent?

O-Negative


What are the universal donors?

Type O is considered the universal blood type.


Is there such a thing as a universal blood type ?

Some time ago, blood type O negative was considered to be a universal blood type. However, even O negative can contain antibodies that can be harmful to the receiver.


What type of blood can A blood safely receive?

Type A or Type O Negative can give to positive Positive can not give to negative


Which blood type is theoretically considered the universal donor?

The blood type that is theoretically considered the universal donor is type O. Type O blood does not have any antigens, therefore it is compatible with any blood type.


What blood type is also known as the universal donor?

Blood type O negative


O positive person can donate blood to b negative person?

A person who has type O blood is called a universal donor which means you can donate blood to anybody no matter what their blood type is. The only thing is a person with o Type blood can only receive O type blood and nothing else. I worked in a ER and if the patient needed a blood transfusion and we didn't know what blood type he was we always gave type O blood.


Which blood type is a universal donor?

Type O


What blood type is called the universal recipient because people with it can take transfusions from anybody?

The blood type that is can be given to anyone is blood type O-. A person that has the blood type O- is called a universal donor because O- is compatible (as long as they are not an alien!). People with negative blood types can only take negative blood types. People with positive blood types can take either positive or negative, so that is why only blood type O- is the universal blood type, not O+. :) ~Ctmusicgirl7PCH=AB