Normal numbers of oocysts with a size comparable to wild type oocysts. Oocyst development was blocked at the sporoblast stage. The oocysts ceased to mature at a point when sporozoites were beginning to form around the edges of cytoplasmic islands and remained arrested at this point until at least day 22 post-infection.

Normal numbers of oocysts. However, no sporozoite formation inside oocysts (oocyst became vacuolated). No salivary gland sporozoites.

Normal numbers of oocysts with a size comparable to wild type oocysts. Oocyst development was blocked at the sporoblast stage. The oocysts ceased to mature at a point when sporozoites were beginning to form around the edges of cytoplasmic islands and remained arrested at this point until at least day 22 post-infection. No salivary gland sporozoites.

Normal numbers of oocysts. However, no sporozoite formation inside oocysts (oocyst became vacuolated). No salivary gland sporozoites.