Across
- 3. a blood protein produced in response to and counteracting a specific antigen. Antibodies combine chemically with substances which the body recognizes as alien, such as bacteria, viruses, and foreign substances in the blood.
- 5. a bacterium, virus, or other microorganism that can cause disease.
- 7. conditions or practices conducive to maintaining health and preventing disease, especially through cleanliness.
- 8. a substance used to stimulate immunity to a particular infectious disease or pathogen, typically prepared from an inactivated or weakened form of the causative agent or from its constituents or products.
- 10. infectious bacterial disease characterized by the growth of nodules (tubercles) in the tissues, especially the lungs.
- 14. an infection or disease
- 17. a member of a large group of unicellular microorganisms which have cell walls but lack organelles
- 18. organism, typically a biting insect or tick, that transmits a pathogen, disease, or parasite from one animal or plant to another.
- 19. the process of infecting or the state of being infected.
- 20. toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
Down
- 1. spread from one person or organism to another by direct or indirect contact.
- 2. short for streptococcus.
- 4. the state or quality of being resistant to a particular infectious disease or pathogen.
- 6. lung inflammation caused by bacterial or viral infection
- 9. are microorganism, especially one which causes disease.
- 11. form of small leukocyte (white blood cell) with a single round nucleus, occurring especially in the lymphatic system.
- 12. is a disorder of structure or function in a human, animal, or plant, especially one that has a known cause and a distinctive group of symptoms, signs, or anatomical changes.
- 13. disease characterized by inflammation of the liver.
- 15. a bacterium, virus, or other microorganism that can cause disease.
- 16. infection