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Seems like you're looking for definition 1.b. pla·ce·bo(pl-sb) n. pl. pla·ce·bos or pla·ce·boes1.a. A substance containing no medication and prescribed or given to reinforce a patient's expectation to get well.b. An inactive substance or preparation used as a control in an experiment or test to determine the effectiveness of a medicinal drug.2. Something of no intrinsic remedial value that is used to appease or reassure another. source: http://www.thefreedictionary.com/placebo

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A common imitation substance used in experiments is a placebo, which is an inactive substance or treatment that resembles the real intervention being tested. Placebos are used in clinical trials to help researchers assess the true effects of a new treatment by comparing it to a control group receiving the placebo.

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9mo ago
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Q: What is an imitation substance used in experiments?
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