Across
- 2. a blood protein produced in response to and counteracting a specific antigen
- 4. a type of white blood cell that "eats" foreign invaders
- 7. disease-causing agent such as a bacterium, virus, fungus, or protozoan
- 8. the change in electrical potential of a neuron or other excitable cell relative to its surroundings when not stimulated or involved in passage or an impulse
- 9. a colorless cell that circulates in the blood and body fluids and is involved in counteracting foreign substances
Down
- 1. a small colorless disk-shaped cell fragment without a nucleus, found in large numbers in blood and involved in clotting
- 3. the ability of an organism to resist a particular infection or toxic by the action of specific antibodies or sensitized white blood cells
- 5. a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies
- 6. treatment with a vaccine to produce immunity against a disease