![](https://webarchive.library.unt.edu/eot2008/20090514040320im_/http://www.cancer.gov/images/spacer.gif) |
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(FEH-nil-KEE-tone-yoor-ee-uh)
![](https://webarchive.library.unt.edu/eot2008/20090514040320im_/http://www.cancer.gov/images/spacer.gif)
| An inherited disorder that causes a build-up of phenylalanine (an amino acid) in the blood. This can cause mental retardation, behavioral and movement problems, seizures, and delayed development. Using a blood test, PKU can easily be found in newborns, and treatment is a diet low in phenylalanine. Also called PKU. |
Previous Definitions: | phenol, phenothiazine, phenoxodiol, phenylacetate, phenylbutyrate | Next Definitions: | pheochromocytoma, pheresis, Philadelphia chromosome, philosophical, phlebitis |
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