Fig. 7. The trafficking routes of the three major classes of secretory organelles in the Plasmodium falciparum merozoite, numbered 1-3 to reflect their times of origin from the Golgi cisterna. Routes 1 (rhoptry-directed vesicles) and 3 (dense granules) are independent of microtubules, whereas route 2 represents the microtubule-related targeting of micronemes to the merozoite apex. Other details of merozoite structure, including the pellicular system and merozoite coat are not depicted.