character: Dr. Lisa Hartman
topic: Cell Communication Overview
grade: 12
subject: Biology
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character: Mr. Thomas Reed
topic: Cell Signaling Pathways
grade: 12
subject: Biology
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character: Ms. Angela Tran
topic: How Cells Detect Environmental Signals
grade: 12
subject: Biology
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character: Dr. Emily Chen
topic: Intercellular Communication Mechanisms
grade: 12
subject: Biology
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