group O
Học thuậtThân thiện
Definition
Noun: - Group O: A specific classification in the ABO blood group system. It refers to the blood type whose red blood cells lack both the A and B antigens on their surface. Individuals with this blood type are often called "universal donors" for red blood cell transfusions because their cells are less likely to cause an immune reaction in recipients with other blood types.
Usage
- Noun:
- The patient has group O blood, so finding a compatible donor is easier.
- Group O is the most common blood type in many populations.
Advanced Usage
"O negative" (O-): A specific type within Group O where the blood also lacks the Rh factor (RhD antigen). O negative blood is considered the universal donor type for red blood cells in emergency situations.
- The trauma center keeps a supply of O negative blood on hand for emergencies.
"O positive" (O+): A specific type within Group O where the blood has the Rh factor (RhD antigen). It is the most common blood type.
- While O positive is not a universal donor, it is the most frequently needed blood type.
Variants and Related Words
- Type O: A common synonym for Group O.
- Blood group O: A fuller, more formal term.
- Universal donor: A descriptive term for individuals with Group O negative blood, referring to their red blood cells' compatibility.
Synonyms
- Type O
- Blood type O
Related Phrases
- "To be a universal donor": To have Group O negative blood, meaning one's red blood cells can typically be transfused to patients of any ABO blood type.
- Because she is O negative, she is a universal donor.
Noun
- the blood group whose red cells carry neither the A nor B antigens
- people with type O blood are universal donors