Morphology A cyst(包囊)of ToXoplasma gondii Toxoplasma gann filled with bradyzoites (by P.W. Pappas arld S.M. Wardrop) cyst in cardiac muscle
Morphology • A cyst (包囊)of Toxoplasma gondii filled with bradyzoites; cyst in cardiac muscle
Cyst in brain
Cyst in brain
Morphology A sporulated oocyst(卵囊) of ToXop/ asma gondii The oocyst contains two sporocysts(孢子囊),each of which contain four crescent-shaped sporozoites (子孢子) Only cats produce and pass ToXoplasma oocysts approximate diameter 10 um 了 oXoplasma gond oocyst (by P W. Pappas and S.M. Wardrop))
Morphology • A sporulated oocyst (卵囊)of Toxoplasma gondii. • The oocyst contains two sporocysts(孢子囊), each of which contain four crescent-shaped sporozoites (子孢子) • Only cats produce and pass Toxoplasma oocysts; approximate diameter = 10 µm
Life Cvcle Fecal A Tissue Cysts Both oocysts and tissue cysts transform into tachyzoites shortly after ingestion Tachyzoites localize in neural and muscle tissue and develop into tissue cyst bradyzoites. If a pregnant woman becomes infected, tachyzoites can infect the fetus via the bloodstream △= Infective Stage A Diagnostic Stage A A a Diagnostic Stage 1)Serological diagnosis 2)Direct identification of the parasite from peripheral blood, amniotic fluid, or in tissue sections
Life Cycle