1. Sulfa drugs, penicillin and other antibiotics had not yet been discovered.

2. A sulfa drug, C10H 10N 4O 2S, used in the treatment of meningitis and other infections.

3. Long-term sulfa drug therapy usually helps; rehabilitation is usually also needed.

4. We report a patient with pulmonary nocardiosis who improved after sulfa drug and minocycline treatment.

5. And similar to penicillin, many bacteria also have had a sulfa drug resistance.