Across
- 4. A chemical found in some of the body's cells.
- 5. A tiny, single-celled living organisms.
- 6. The line of defense preventing the entry and growth of pathogens
- 10. A sticky, wet liquid produced by glands
- 12. A liquid component which take in nutrients, hormones, and proteins to the parts of the body that need it
- 13. An organism causing disease to its host
- 14. Learning to distinguish self from nonself
Down
- 1. A naturally occurring, extremely complex substance that consists of amino acid residues
- 2. A action, or sound that is used to convey information
- 3. An abnormally high body temperature
- 7. It is the process by which the immune system recognizes and removes harmful and foreign stimuli and begins the healing process.
- 8. A type of immune cell that can surround and kill microorganisms
- 9. An abnormal enlargement of a part of the body
- 11. Is an oily substance that protects your skin from drying out.
- 13. A thick yellowish or greenish liquid produced in infected tissue