Multiple choice

D.E. Salmon & Theobald Smith discovered what in 1885?

  1. Penicillin antibiotic

  2. smallpox vaccine

  3. rabies vaccine

  4. dead microbial cells were effective as vaccines
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In 1885, Daniel Elmer Salmon and Theobald Smith discovered that killed microbial pathogens could be used as effective immunizing agents (vaccines). This breakthrough laid the foundation for the development of modern killed/inactivated vaccines.

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