Researchers develop model of toxoplasmosis evolution
(PHYSorg.com Biology)

Toxoplasmosis is an infectious disease caused by the spread of Toxoplasma gondii, a parasitic alveolite with an interesting life cycle. It exists in three forms. First, oocysts are produced in cats and passed in feces or urine. The oocytes can then be transmitted to humans and other intermediate hosts, including house mice. Toxoplasma gondii then develops into tachyzoites, which rapidly multiply before localizing to muscle tissues and the central nervous system; at this point, they develop into cysts called bradyzoites. These can then be transmitted by consumption-for instance, when a domestic cat eats a mouse.