Idiom
It is disease which used to exist in the past in most countries of old world.

Meseale
Small pox
Cholera
Malaria

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Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. The arrival of the mother-in-law in the family proved a rift in the lute.

brought about a disciplined atmosphere
caused unnecessary worries
brought about disharmony
caused a pleasant atmosphere

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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
The antibodies utilized in active immunity are acquired from another organism
Immunological memory is established by passive immunization
A vaccination is an example of the introduction of passive immunity into the body

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