Effects of different concentrations of APC1 against trophozoites and cysts of A. lenticulata (a and b), A. castellanii (c and d), and A. polyphaga (e and f). Concentrations of 5 μM (▪), 10 μM (□), 20 μM (▴), 40 μM (▵), 80 μM (•), and 160 μM (○) were used. ∗, control.