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  1. Penicillin - Wikipedia

  2. Penicillin: Types, Uses & Side Effects - Cleveland Clinic

  3. Penicillin | Discovery, History, Uses, Types, Side Effects, & Facts ...

  4. Penicillin Uses, Side Effects & Allergy Warnings - Drugs.com

  5. What Is Penicillin Used For? - Verywell Health

  6. What is penicillin, and how was it discovered? | Live Science

  7. Penicillin - StatPearls - NCBI Bookshelf

  8. History of penicillin - Wikipedia

  9. Penicillin (Oral Route, Injection Route, Intravenous Route ...

  10. Penicillin’s Discovery and Antibiotic Resistance: Lessons for the …