Alien
Alien (medical)
Alien (pronunciation: /ˈeɪliən/), from the Latin alienus meaning 'belonging to another', is a term used in the medical field to describe a foreign substance or object present in the body that is not naturally produced by the body itself.
Etymology
The term 'alien' originates from the Latin word alienus, which means 'belonging to another'. In the medical context, it is used to describe substances, objects, or organisms that are not naturally produced or present in the human body.
Related Terms
- Foreign body: A general term for any object or substance that is not naturally present in the body. This can include anything from a splinter to a surgical implant.
- Pathogen: A type of 'alien' organism that can cause disease. This includes bacteria, viruses, and other microorganisms.
- Antigen: A substance that the body recognizes as 'alien' and produces an immune response against.
- Autoimmune disease: A condition in which the body mistakenly identifies its own cells or tissues as 'alien' and attacks them.
- Transplant rejection: A serious condition that can occur when the body recognizes a transplanted organ or tissue as 'alien' and attacks it.
See Also
External links
- Medical encyclopedia article on Alien
- Wikipedia's article - Alien
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