• A microscope is an instrument used to enlarge the image of small objects in order to observe them more easily. Microscopes are of different types and specifications. Some microscopes, such as electron microscopes, are used for acute observations, while "normal" compound microscopes can be used in school labs.
  
  

Pathologists

• A pathologist is a person who studies blood and skin samples microscopically for detection of an infection or disease, and to identify the type of pathogen that causes the condition. They also use a microscope in the role of a coroner to examine samples from a dead body.
  
  

Embryologist

• The embryologist studies an embryo using a microscope. Minute observations can be made as the embryo is very small (0.1 to 0.2mm in diameter). Embryologists study human or animal embryos to determine their development from fertilization to the fetus stage.
  
  

Cytologist

• A cytologist is engaged in the study of cells. He uses a microscope to determine cell disease or make observations about different types of cells, their structure and function. Cytologists use high power microscopes to determine abnormalities in cells.
  
  

Entomologist

• Entomology is the study of insects. Entomologists use microscopes extensively to observe the different parts of insects. With the information gathered through such study, entomologists can help predict the impact of any insect on different types of crops, as well as ascertain ways to neutralize unwanted insects.
  
  

Histologist

• Histologists are persons who observe the functioning plant or animal tissues. They use microscopes to observe the behavior of tissues, as well as their anatomy.