Toxoplasma gondii is a sporozoan parasite, and its definitive host is the cat. The organism was first identified in 1908 in the mononuclear cells of a North African rodent. Toxoplasmosis is a disease transmitted to humans and animals by toxoplama gondii, often in cat excrement, or in undercooked meat. It causes flulike symptoms and damages the central nervous system, eyes, and visceral organs. Congenital toxoplasmosis, transmitted from an infected mother to her unborn child, can lead to blindness and retardation. Although toxoplasmosis is a rare disease, its incidence has increased since the acquired immunodeficiency syndrome (AIDS) epidemic. Toxoplasma gondii belongs to Apicomplex parasite family. Research has recently shown that this family of parasites contains an intracellular structure more commonly associated with plants. This may allow for the formulation of new strategies for finding a cure for toxoplasmosis. 9.5 pgs. 22 f/c. 13b.