The innate immune system consists of the skin, protective secretions, the inflammatory response, and . phagocytes
red blood cells

Is this a true or false question? because if so it is true

The answer is either 3 or 4

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.