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1: Clin Microbiol Rev. 1998 Apr;11(2):267-99.Click here to read Click here to read Links

Structures of Toxoplasma gondii tachyzoites, bradyzoites, and sporozoites and biology and development of tissue cysts.

Dubey JP, Lindsay DS, Speer CA.

Parasite Biology and Epidemiology Laboratory, USDA Agricultural Research Service, Beltsville, Maryland 20705-2350, USA. JDUBEY@GGPL.ARSUSDA.GOV

Infections by the protozoan parasite Toxoplasma gondii are widely prevalent world-wide in animals and humans. This paper reviews the life cycle; the structure of tachyzoites, bradyzoites, oocysts, sporocysts, sporozoites and enteroepithelial stages of T. gondii; and the mode of penetration of T. gondii. The review provides a detailed account of the biology of tissue cysts and bradyzoites including in vivo and in vitro development, methods of separation from host tissue, tissue cyst rupture, and relapse. The mechanism of in vivo and in vitro stage conversion from sporozoites to tachyzoites to bradyzoites and from bradyzoites to tachyzoites to bradyzoites is also discussed.

PMID: 9564564 [PubMed - indexed for MEDLINE]

PMCID: PMC106833