character: Coach Tommy Ruiz
topic: Exercise and Its Effects on Immunity
grade: 9
subject: Science
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character: Dr. Emily Martinez
topic: The Immune System and Physical Activity
grade: 9
subject: Science
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character: Professor John Lee
topic: How Exercise Boosts Immune Function
grade: 9
subject: Science
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character: Researcher Lisa Chen
topic: Impact of Regular Exercise on Disease Resistance
grade: 9
subject: Science
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