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Which of the following statements regard...

Which of the following statements regarding vaccination and immunisation are correct ?
I. The principle of vaccination is based on the 'memory' of the immune system .
II. The antibodies produced in the body against antigens neutralise the pathogenic agents before the actual infection .
III. Hepatitis B vaccine is prepared by using a virus in recombinant DNA technology.
IV. Antibodies are given directly in case of infection with deadly microbes to elicit quick immune response.

A

I and III

B

II ,III and IV

C

I,II and III

D

I and IV

Text Solution

Verified by Experts

The correct Answer is:
D
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