character: Dr. Anna Lee
topic: Acetylcholine and Muscle Contraction
grade: 12
subject: Biology
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character: Sarah Johnson
topic: Neuromuscular Junctions
grade: 12
subject: Biology
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character: Michael Chen
topic: Role of Calcium in Muscle Contraction
grade: 12
subject: Biology
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character: Emily Davis
topic: Neurotransmitters and Their Functions
grade: 12
subject: Biology
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