![](https://webarchive.library.unt.edu/eot2008/20090514055704im_/http://www.cancer.gov/images/spacer.gif) |
|
![](https://webarchive.library.unt.edu/eot2008/20090514055704im_/http://www.cancer.gov/images/spacer.gif)
| A mass of blood that forms when blood platelets, proteins, and cells stick together. When a blood clot is attached to the wall of a blood vessel, it is called a thrombus. When it moves through the bloodstream and blocks the flow of blood in another part of the body, it is called an embolus. |
Previous Definitions: | blinded study, bloating, blood, blood cell count, blood chemistry study | Next Definitions: | blood poisoning, blood pressure, blood stasis, blood thinner, blood transfusion |
|
![](https://webarchive.library.unt.edu/eot2008/20090514055704im_/http://www.cancer.gov/images/spacer.gif) |