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The leukocytes that are central to adaptive immunity are the____.
Negative Reinforcement
involves the strengthening of a behavior because a negative condition is stopped or avoided as a consequence of the behavior.
Secondary Reinforcer
A stimulus that acquires its reinforcing capabilities by being linked with a primary reinforcer.
Primary Reinforcer
A naturally reinforcing item or outcome, such as food or water, that does not require learning to be considered rewarding.
Unconditioned Stimulus
In classical conditioning, a stimulus that naturally and automatically triggers a response without the need for prior learning.
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