Question

One of the following is an antigen not found in human blood
(a) A
(b) B
(c) Rh
(d) O

Answer 1

Answer:

O is ur answer buddy....................!

Answer 2

Answer:

The correct answer is : (d) O

Explanation:

• Human blood has the following antigens:

1. Blood group A : Possess antigen A and antibody against antigen B.
2. Blood group B : Possess antigen B and antibody against antigen A.
3. Blood group AB : Possess both antigen A and antigen B and no antibodies.
4. Blood group O : Possess neither antigen A nor antigen B but possess antibodies against both antigen A  and antigen B.
5. Rh factor or Rhesus factor is also known as antigen D. It is a Rhesus monkey derived factor. Its presence is represented by positive and absence is represented by negative.

• Blood transfusion is done after proper matching of blood group and Rh factor. Blood group mismatch can result in hemagglutination and blood clotting.