Name the first antibiotic discovered and by whom.

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the name of the first antibiotic discovered and the name of the person who discovered it.

2. **Recall Historical Context**: The first antibiotic discovered was a significant milestone in medical history, particularly in the treatment of bacterial infections.

3. **Name the Antibiotic**: The first antibiotic discovered is penicillin.

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