Across
- 2. injection of another animal's antibodies
- 3. a calf disease that can be treated with serum
- 6. this type of non specific defence mechanism protects the lungs of the livestock
- 7. colostrum is this type of defence
- 8. coming in to contact with this level of a disease will build active immunity
Down
- 1. (3/8/8)genetic and chemical/physical barriers are examples of this type of defence
- 4. vaccinations are this type of defence against diseases
- 5. this type of passive immunity usually give fairly poor protection