Final answer:
Salmonella bacteria can be identified through microscopic examination using different types of microscopes. Laboratory tests can also be conducted to confirm the presence of Salmonella as the causative agent of an illness or infection.
Step-by-step explanation:
Salmonella bacteria can be identified through microscopic examination using different types of microscopes, such as light microscopes, transmission electron microscopes, and scanning electron microscopes. The bacteria appear as tiny purple dots when viewed under a light microscope. In scanning electron micrographs, Salmonella bacteria can be observed invading human cells. Furthermore, laboratory tests can be conducted to establish a pure culture of the bacteria and analyze it for antigens. These tests can confirm the presence of Salmonella as the causative agent of a particular illness or infection.