character: Mr. Johnson
topic: Physiology of the Urinary System
grade: 11
subject: Biology
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character: Dr. Smith
topic: Electrolyte Balance and Homeostasis
grade: 11
subject: Biology
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character: Ms. Davis
topic: Kidney Function and Regulation
grade: 11
subject: Biology
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character: Professor Lee
topic: Water and Electrolyte Regulation in the Body
grade: 11
subject: Biology
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