character: Dr. Albert Sabin
topic: Oral Polio Vaccine Research
grade: 9
subject: Science
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character: Jonas Salk
topic: Polio Vaccine Development
grade: 9
subject: Science
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character: Louis Pasteur
topic: Vaccine Development History
grade: 9
subject: Science
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character: Edward Jenner
topic: Vaccination Principles
grade: 9
subject: Science
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