Fig. 7 in A phylogenetically unresolved apicomplexan (APXSc) causing swirl lesions in the Tehuelche scallop, Aequipecten tehuelchus, from the Southwest Atlantic coast

Fig. 7. TEM microphotographs showing signs of endomerogony of APXSc. (A) A group of meronts, some of which with signs of spindle microtubules within the nucleus (white arrowhead) and one showing signs of asynchronous endomerogony (within the rectangle), i.e. where the merozoites develop inside the mother cell. (B) Higher magnification of presumable endomerogony, showing two forms inside a mother cell. Remains of the conoid of the mother cell are still visible (insert) but at the other end an apical complex a "progeny" seems to be forming (micronemes = Mn), while another merozoite has completely detached from the mother cell (arrow). (C) A dividing meront with visible spindle microtubules (arrow). N = nucleus; No = nucleolus; Mn = micronemes.