This document discusses parasite examination through stool samples. It defines parasites as organisms that live within or on a host, using the host's resources. There are two main types of parasites: endoparasites, which live inside the host, such as tapeworms and roundworms, and ectoparasites, which live outside on the skin or body, like ticks and lice. Stool examination can be used to identify parasites, bacteria, viruses, and fungi infecting the gastrointestinal tract. A general stool exam involves visual inspection of the stool sample, then microscopic examination of a saline preparation to detect eggs, larvae, cysts, white and red blood cells, and other microorganisms present.