Idiom
To leave someone in the lurch

To desert someone in his difficulties
To come to compromise with someone
None of these
Constant source of annoyance to someone
To put someone at ease

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

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