An anatomist is a specialist doctor who conducts medical or biomedical research on the structure, biochemical composition, growth and function of tissues and organs of the human or animal body. In particular, he studies the reactions of living tissues after medical or biotechnological interventions (organ transplants, in vitro fertilization, cell cultures, etc.). His goal is to advance medical science. Some anatomists are specialized in a specific field: the neuroanatomist, for example, is interested in the anatomy of the brain. The anatomo-pathologist, for his part, is interested only in tissue pathologies. He interprets the samples (biopsies and smears) to establish the nature of a possible cancer and allow the best treatment to be set up. He is sometimes called upon to perform autopsies for medical purposes. He works in a research laboratory or in a hospital. This expert profession remains quite rare.