Cytological analysis of CECs isolated with magnetic beads coated with S-Endo 1 antibody. Each panel shows CECs isolated from donors with AMI or UA. Panels A, B, and C show CECs stained with acridin orange presenting a round shape, clear nuclei and nucleoli (arrows) (A and B) or a spindle shape (C). Panel D shows a cell sheet stained with May-GrünwaldGiemsa. Numerous beads (focus or out of focus) are evident in all panels (arrowheads); they have a diameter of 4.5 μm.