Question

Character(s) of acquired immunity is (are) :-

• A. Differentiation between self and non-self
• B. Specificity of antigen
• C. Retains memory
• D. All of the above

Answer 1

Answer: (D)

All of the above

Acquired immunity is developed after birth. It is produced after getting exposed to antigens hence it is specific in nature. Acquired immunity creates immunological memory after an initial response to a specific pathogen, and leads to an enhanced response to subsequent encounters with that pathogen.

Acquired immunity relies on the capacity of immune cells to distinguish between the body's own cells and unwanted invaders. The host's cells express "self" antigens. These antigens are different from those on the surface of bacteria or on the surface of virus-infected host cells ("non-self" or "foreign" antigens).

So, the correct option is 'All of the above'.