The diagnosis of acute infection is established by the presence of tachyzoites in tissue parts and/or smears of body fluid (CSF, amniotic, or bronchoalveolar lavage fluids) [6] . The presence of several tissue cysts indicates the presence of a chronic infection [7] . In experimentally infected mice, histopathological smear analysis revealed that the chosen tissues for detecting T. gondii are the liver and spleen in the virulent strain (RH), and the brain and kidney in the avirulent strain (ME49) [8] .
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