Final answer:
A pathologist is a medical doctor or veterinarian who specializes in the laboratory detection of diseases in animals, including humans.
Step-by-step explanation:
A pathologist is a medical doctor or veterinarian who specializes in the laboratory detection of diseases in animals, including humans. They examine tissue specimens through a microscope to identify diseases and may perform autopsies to determine the cause of death and the progression of disease. Pathologists play a crucial role in identifying unknown diseases and understanding their causes.