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Select the correct statement about disea...

Select the correct statement about diseases and immunisation.

A

if due to some reason , B-and T- Lymphocytes are damaged the body will not produce antibody against a pathogen

B

injection of dead /inactivated pathogens causes passive immunity

C

certain protozoans have been used in mass production of hepatitis B vaccine

D

injection of snake antivenom against snake bite is an example of active immunisation

Text Solution

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The correct Answer is:
A
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