Idiom
Select the correct statement about active and passive immunity.

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

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Idiom
A black sheep

A partner who takes no share of the profits
None of these
An ugly person
An unlucky person
A lucky person

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