Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Which of the following statement(s) is/are true for vaccine - Sarthaks eConnect
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Practice Online Test Series for JEE Main 2018 & NEET 2018

Which of the following statement(s) is/are true for vaccine :

A.

collection of attenuated disease causing bacteria and virus

B.

collection of microorganism

C.

collection of killed a disease causing bacteria and virus

D.

Both (a) and (c)