Fig. 4.

Egressed parasites had similar in vitro growth and virulence as control parasites. a HFFs were infected with egressed T. gondii induced by NO or naturally released parasites. Twenty-four hours later, the cells were fixed and the number of parasites per vacuole in eight fields was counted and expressed as a percentage of the total number of parasites in the field. The data in the figure show the means ± SDs of five replicates and represent three independent experiments. b C57BL/6 mice were i.p infected with 10³ parasites and the survival rate was recorded every day