http://www.astro.sunysb.edu/tracy/whatis.html http://www.astro.sunysb.edu/tracy/whatis.html astro.sunysb.edu http://www.astro.sunysb.edu/tracy/whatis.html PHENYLKETONURICS: CONTAINS PHENYLALANINE What is PKU? phenylketonurics PHENYLKETONURICS: CONTAINS PHENYLALANINE