Immune System

4. happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them
9. treatment with a vaccine to produce immunity against a disease; inoculation
10. existing in or caused by nature; not made or caused by humankind
12. a type of lymphocyte that are responsible for the humoral immunity component of the adaptive immune system
13. a type of defense that is specific resistance
14. a blood protein produced in response to and counteracting a specific antigen
15. blood cells that are most common type of blood cell and the vertebrate's principal means of delivering oxygen to the body tissues
16. resistant to a particular infection or toxin owing to the presence of specific antibodies or sensitized white blood cells
17. a type of white blood cell that is part of the immune system.
18. a type of immunity when a person is given antibodies to a disease rather than producing them through his or her own immune system

1. made or produced by human beings rather than occurring naturally, especially as a copy of something natural
2. primary line of defense
3. a large phagocytic cell found in stationary form in the tissues or as a mobile white blood cell, especially at sites of infection
5. type of defense that is nonspecific resistance that destroys invaders in a generalized way without targeting specific individuals
6. part of the immune system and develop from stem cells in the bone marrow
7. type of immunity results when exposure to a disease organism triggers the immune system to produce antibodies to that disease
8. a type of cell within the body capable of engulfing and absorbing bacteria and other small cells and particles
11. blood cells that are part of the body's immune system