They have erythrocytic gamogony, both erythrocytic and extra-erythrocytic merogony and cystogony. A variety of derivatives of 4-aminoquinoline are antimalarial agents useful in treating erythrocytic plasmodial infections. Sulfonamides act on the schizont stages of the erythrocytic (asexual) cycle. Uninucleated merozoites mature into an erythrocytic stage schizonts which contain merozoites. Alternative polyadenylation accounting for the different sized erythrocytic ankyrin 1 mRNAs, has also been reported.