Person with blood group AB is considered as universal recipient because he has

Options

A. Both A and B antigens in the plasma but no antibodies
B. Both A and B antigens on RBC but no antibodies in the plasma
C. Both A and B antibodies in the plasma
D. No antigen on RBC and no antibody in the plasma

Answer

To understand why a person with blood group AB is considered a universal recipient, we can break down the explanation into clear steps:

### Step-by-Step Solution:

1. **Understanding Blood Groups**:
- Blood groups are determined by the presence or absence of specific antigens on the surface of red blood cells (RBCs). The main blood groups are A, B, AB, and O.
- Blood group A has A antigens, blood group B has B antigens, blood group AB has both A and B antigens, and blood group O has neither.

2. **Antigens and Antibodies**:
- Along with antigens, blood also contains antibodies. These are proteins in the plasma that can react against foreign antigens.
- For example, a person with blood group A will have A antigens on their RBCs and will produce anti-B antibodies in their plasma. Similarly, blood group B has B antigens and anti-A antibodies.

3. **Characteristics of Blood Group AB**:
- A person with blood group AB has both A and B antigens on their RBCs.
- Importantly, they do not have anti-A or anti-B antibodies in their plasma. This means they do not produce antibodies that would attack A or B antigens.

4. **Universal Recipient**:
- Because individuals with blood group AB do not have antibodies against A or B antigens, they can receive blood from any blood group (A, B, AB, or O) without the risk of an immune reaction.
- This characteristic makes AB blood group individuals universal recipients.

5. **Conclusion**:
- Therefore, the correct reason why a person with blood group AB is considered a universal recipient is that they have both A and B antigens on their RBCs but no antibodies in their plasma.

### Final Answer:
A person with blood group AB is considered a universal recipient because they have both A and B antigens on their RBCs but no antibodies in the plasma.

---