Infected parasite Host statusa Resistance to infectionb Expression of HSP65c Beverly strain Bradyzoite Non-immune + + Bradyzoite Immune with sonicated T. gondii ++ ++ Tachyzoite After in vivo passage Non-immune - - RH strain       Tachyzoite Non-immune - - Tachyzoite Live-vaccinated with a low dose of the Beverly strain ++ ++ aBALB/c mice were used as hosts; bSymbols used here represent resistance to infection; +: resistant; ++: very resistant; -: susceptible; cSymbols used here represented levels of HSP65 expression as follows: +: strong; ++: very strong; -: none

Table 37: Relationship between HSP65 expression and resistance to infection with T. gondii (according to Hisaeda and Himeno [595]).