Did you know?  A study reported that  __________________ is…

Did you know?  A study reported that  __________________ is an effective, low attenuation oral contrast agent for upper GI computed tomography. If you did not read the excerpt in the chapter, I’ll give you a hint.  The answer is something that you would commonly find in most refrigerators.  “It does the body good.” Think about the periodic chart and the elements.