Full Form of ABO

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ABOstands for

ABO blood group system

What is ABO?

The ABO blood group system is a classification system for human blood based on the presence or absence of antigens (A and B) on the surface of red blood cells and corresponding antibodies in the plasma. Discovered by Karl Landsteiner in 1901, it comprises four main groups: A, B, AB, and O. This system is critical for safe blood transfusions, as mismatched transfusions can cause severe immune reactions. In India, the ABO system is routinely used in blood banks, hospitals, and diagnostic labs to ensure donor-recipient compatibility. It is also a fundamental topic in biology and medical entrance exams like NEET and AIIMS, where students must understand inheritance patterns and transfusion rules. The system is applied in paternity testing, organ transplantation, and population genetics studies. For competitive exams, questions often focus on the genotype-phenotype relationship and universal donor (O negative) and universal recipient (AB positive) concepts. Understanding ABO is essential for healthcare professionals and students pursuing medicine or life sciences.

ABO का फुल फॉर्म

एबीओ रक्त समूह प्रणाली

Example

Before receiving a blood transfusion, the patient's ABO blood group must be confirmed to avoid a dangerous incompatibility reaction.

ABO — frequently asked questions

What is the full form of ABO?
The full form of ABO is the ABO blood group system, which categorizes human blood into types A, B, AB, and O based on red cell antigens.
Which is the universal donor in ABO blood groups?
Type O negative blood is considered the universal donor for red blood cells because it lacks A, B, and Rh antigens, making it compatible with all ABO blood types.
How does the ABO system affect blood transfusion in India?
In India, hospitals and blood banks strictly follow ABO typing before transfusions to prevent agglutination and hemolytic reactions, ensuring safe blood compatibility.
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