To be able to look at blood cells, skin cells, salvia, sperm, etc...the list goes on and on. Most medical problems that have to do with infections, diseases, and illnesses need microscopes in order to look at different cells and see what is abnormal. There are also specially made microscopes that are inserted into the body to check for abnormalties.
to see things that the naked eye can't like cells in a body or germs on the surface of something.
With this we can see very very small cells. Its the best tool for testing purpose.
thank you ((:
thank you :)