Circle the odd one out among the following: Streptomycin, penicillin, erythromycin, gentamicin

Explanation

To solve the question of identifying the odd one out among the antibiotics: Streptomycin, Penicillin, Erythromycin, and Gentamicin, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the List of Antibiotics**:
- The antibiotics given are:
- Streptomycin
- Penicillin
...