Question

Which of the following properties of acquired immunity is the basis of vaccination?

• A. Specificity
• B. Diversity
• C. Memory
• D. Discrimination between self and nonself

Answer 1

Answer: (C)

Memory

Vaccination is the administration of antigenic material (a vaccine) to stimulate an individual's immune system to develop acquired immunity to a pathogen. Upon administration of attenuated or inactivated antigen (vaccine), the antibodies are produced by plasma cells and memory cells are activated. When the same antigen attacks the person in future, the memory cells recognize the antigen and promotes phagocytosis.

So, the correct answer is 'Memory'.