character: Dr. Sarah Thompson
topic: Chemical Signals in the Brain
grade: 9
subject: Science
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character: Neurotransmitters
topic: Functions and Types
grade: 9
subject: Science
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character: Dopamine
topic: Role in Reward and Pleasure
grade: 9
subject: Science
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character: Serotonin
topic: Mood Regulation and Mental Health
grade: 9
subject: Science
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