What did Jenner's smallpox vaccine mark the beginning of?
Modern immunology
Genetic research
Antibiotic era
Surgical advancements
Answer
Modern immunology began with Jenner's smallpox vaccine. By introducing a weakened form of the smallpox virus into the body, Jenner stimulated the immune system to develop antibodies against the disease without causing full-blown illness.
Edward Jenner: The Vaccine Visionary Quiz
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