Magnified 128X, this photomicrograph revealed some of the ultrastructural features displayed by a Trichuris trichiura egg. The nematode, or roundworm, is also called the human whipworm. T. trichiura eggs are 50µm-55µm by 20µm-25µm. As is exemplified by this specimen, eggs are football-shaped, thick-shelled, and possess a pair of polar plugs at each end. Eggs are passed unembryonated in stool.Created: 1979
Magnified 500X, this photomicrograph of an unstained, formalin-preserved stool specimen mount, revealed the presence of a Trichuris vulpis nematode egg. T. vulpis is a whipworm that is common to dogs.Adult worms are 30 50nm in length, and as parasites, reside in the ceceum, a region of the large intestine where it is joined by the small intestine or ileum. This specie of whipworm, though common to canines, has been found in the human digestive tract.Created: 1973
Description: This micrograph reveals a developing Trichinella cyst within human skeletal muscle tissue. Date: 27 November 2012. Source: http://www.publicdomainfiles.com/show_file.php?id=13544451016563. Author: Centers for Disease Control and Prevention. Public Health Image Library.