Across
- 4. an antibiotic
- 5. chemicals that inhibit the growth of harmful microorganisms
- 6. suspensions of killed,or weakened microorganisms,administered to increase protection against a disease
Down
- 1. a disease caused by bacteria which can be treated by antibiotics
- 2. the natural ability of an organism to have inbuilt mechanism to resist,and destroy,the infection that some microorganism may cause
- 3. antibiotic obtained from fungus Penicillium notatum