- Antibiotics
- Chloramphenicol (30 mcg)
- Erythromycin (15 mcg)
- Kanamycin (30 mcg)
- Neomycin (30 mcg)
- Novobiocin (30 mcg)
- Penicillin G (10 units)
- Streptomycin (10 mcg)
- Tetracycline (30 mcg)
2. Bacteria
- Bacillus subtilis (rods)
- Micrococcus luteus (spheres)
- Rhodospirillum rubrum (spirals)
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