Idiom
To cast pearls before a swine

To spend recklessly
To spend a lot of money on the unkeep of domestic hogs
To waste money over trifles
To offer a person a thing which he cannot appreciate

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Idiom
Select the correct statement about active and passive immunity.

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
Active and passive humoral immunity are both mechanisms of adaptive immunity that useantibodies

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