Examlex
Which of the following statements is true?
Placebo
A substance with no therapeutic effect, often used in clinical trials as a control to test the effectiveness of drugs.
Placebo Injection
A treatment using a substance that has no therapeutic effect, used as a control in testing new drugs.
Control Group
In experimental research, a group of subjects that does not receive the treatment or intervention being studied and is used as a benchmark to measure the effects of the treatment.
Inactive Substance
A substance that has no intended therapeutic effects, often used as a control in experiments.
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