Which of the following about active immunity is correct?

Which of the following about active immunity is correct? mcq given below:

(a) No lag phases
(b) Booster doses are useful
(c) Useful in immunodeficient people
(d) No memory cells

Ans:(b) Booster doses are useful

Do you Agree with Answer comment below

Talk to Me

Scan the code

Hi, Ask me anything regarding your exam preparation.