Examlex
If the body is exposed to the same pathogen in the future, memory cells allow the body to mount a much faster response to the invasion known as the ________ response.
Stimulant
A substance that raises levels of physiological or nervous activity in the body, improving alertness and physical performance.
Depressant
A class of drugs that reduce neural activity and slow down the functions of the brain and body.
Hallucinogen
A substance that causes alterations in perception, thought, and mood, leading to hallucinations or sensory distortions.
Dependence
A state in which an individual requires a particular substance or behavior to function normally and experiences physical or psychological withdrawal symptoms without it.
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