character: Human Growth Hormone
topic: Regulation of Growth and Development
grade: 9
subject: Science
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character: Insulin
topic: Regulation of Blood Sugar Levels
grade: 9
subject: Science
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character: Thyroid Hormones
topic: Regulation of Metabolism
grade: 9
subject: Science
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character: Adrenaline
topic: Fight or Flight Response
grade: 9
subject: Science
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