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Complete the statement with the correct word.
(blank) is a social healthcare program for low-income families who have limited means.

What happens to the influenza virus every 20-40 years and why?

Few days to several months depending on the severity of the stroke ;

Unlike  ct scans, which use x-rays,  mri scans  use powerful magnetic fields and radio frequency pulses to produce detailed pictures of organs, soft tissues, bone and other internal body structures.  differences between  normal and abnormal tissue is often clearer on an  mri  image than a  ct.you can see more with a mri scan. for example on an mri you can see internal bleeding.

The alveoli are what give the lungs so much space, and if they are big, there is more gas exchange than if they are small.