Explain the Relationship Between the HIV Receptors CD4⁺, CCR5, and CXCR4

question 16

Essay

Explain the relationship between the HIV receptors CD4⁺, CCR5, and CXCR4.

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Definitions:

Variable-Ratio

A schedule of reinforcement where a response is rewarded after an unpredictable number of responses, often used in gambling and behavior training.

Shaping

A method used in behavior therapy and training that involves reinforcing successive approximations of a target behavior until the desired behavior is achieved.

Spontaneous Recovery

A phenomenon in psychology where a previously extinguished response re-emerges after a period of no exposure to the conditioned stimulus.

Positive Reinforcer

An event or item that, when presented after a behavior, increases the likelihood of that behavior occurring again.