Last seen in:
- Thomas Joseph - King Feature Syndicate - Apr 15 2024
- L.A. Times Daily - Nov 14 2021
- Eugene Sheffer - King Feature Syndicate - Oct 27 2021
- The Telegraph - QUICK CROSSWORD NO: 29,752 - Aug 12 2021
- Thomas Joseph - King Feature Syndicate - Mar 19 2020
- Thomas Joseph - King Feature Syndicate - Jun 5 2019
- Thomas Joseph - King Feature Syndicate - Jun 23 2018
- Eugene Sheffer - King Feature Syndicate - May 7 2018
- Thomas Joseph - King Feature Syndicate - Dec 23 2016
- Thomas Joseph - King Feature Syndicate - Nov 5 2016
Related Clues:
- Polio vaccine developer
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- Vaccine developer
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