Jonas _, American medical researcher who developed the first successful polio vaccine
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Related clues
- Virologist awarded the Presidential Medal of Freedom in 1977
- Jonas ___, US virologist who developed a vaccine against polio in the early 1950s
- Jonas _, virologist who developed the first effective polio vaccine
- Jonas, U.S. virologist who developed an injected vaccine against poliomyelitis
- La Jolla scientific research institute namesake
Possible answers
- S
- A
- L
- K