Idiom
Branch of science which deal with the study of causative agent of disease is

Eugenics
Euthenics
Ecology
Etiology

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Idiom
Select the correct statement about active and passive immunity.

Active and passive humoral immunity are both mechanisms of adaptive immunity that useantibodies
A vaccination is an example of the introduction of passive immunity into the body
Immunological memory is established by passive immunization
The antibodies utilized in active immunity are acquired from another organism

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