Viruses are not cells, and viruses include the Tobacco Mosaic Virus. Given these facts, what is not made up of cells among the following options:
- an object
 - Veins and arteries.
 - Tobacco mosaic
 - an organism's body
 - Conifers
 - sensory neurons
 - layers of fat
 - the digestive system


 

   Tobacco mosaic      