**Figure 4. **Analysis of ARPE-19 cells after *T. gondii* infection by light and transmission electron microscopy. Non-infected (control; **A**) and infected cells after 60 (**B**) and 240 min (**C**) with thin and long extensions (arrows). Intracellular parasites (arrowhead). Electron micrograph of control ARPE-19 cells
(**D**) and infected with parasitophorous vacuoles containing variable numbers of *T. gondii* tachyzoites (T) after 60 (**E**) and 240 min (**F**). N, nucleus. Scale bars: 25 µm (**A**), 10 µm (**B**, **C**), 1 µm (**D**-**F**).