Examlex
______ is what makes the comparison group in a true experiment such a powerful tool for identifying the effects of the treatment.
Pineal Gland
A small, pine cone–shaped structure that projects from the epiphysis of the diencephalon; produces melatonin; also called pineal body.
Thymosin
A hormone produced by the thymus gland that plays a role in the maturation of T cells involved in the immune response.
Immune System
The body's defense mechanism against pathogens, including both innate and adaptive immune responses.
Enkephalins
Are pentapeptides involved in regulating nociception in the body; they function as neurotransmitters or neuromodulators.
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