sporoblast formation is preceded by ( a ) invaginations of the oocyst capsule into the oocyst cytoplasm , ( b ) subcapsular vacuolization and cleft formation , ( c ) the appearance of small tufts of capsule material on the previously noted invaginations , and ( d ) linear dense areas located just below the oocyst plasma membrane which predetermine the site of emerging sporozoites from the sporoblast .
C0010834
cytoplasm
C0007603
plasma membrane