Subcellular organisation of Dactylosoma cf. ranarum SK trophozoites and primary merogonic stages. A) Trophozoite showing remnants of the apical complex. B; C) Trophozoite transforming into a meront stage. D) Early meront displaying the mitotic spindle. E) Young meront showing the initial stages of merozoite budding. F) Primary meront with budding merozoites. G) Anterior region of the merozoite shown in F. Transmission electron microscopy. a – amylopectin granule(s), black arrowhead – parasite plasma membrane, black arrows – mitotic spindle, black asterisk – microneme(s), black circle – micropore, c – conoid, double black arrowhead – inner membrane complex, e – erythrocyte, er – rough endoplasmic reticulum, g – Golgi apparatus, l – lipid droplet, m – mitochondrion, n – nucleus, pr – polar rings, small white arrow – subpellicular microtubule, white arrow – parasitophorous vacuole, white asterisk – apical pole of a budding merozoite.