Examlex
Fever is induced at the systemic level by ________, which is an endogenous pyrogen.
Control Groups
In experimental research, a group of subjects that does not receive the experimental treatment, serving as a comparison to evaluate the effect of the treatment.
Independent Variable
In an experiment, the independent variable is the factor that is manipulated to see if it causes a change in the outcome or dependent variable.
Nicotine
A stimulant and addictive substance found in tobacco, responsible for the habit-forming nature of tobacco use.
Placebo
A substance with no therapeutic effect, used as a control in testing new drugs or used to elicit a psychological benefit.
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