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. 2013 Sep 22;10:57. doi: 10.1186/1742-9994-10-57

Figure 8.

Figure 8

Pellicle organisation in Gregarina cuneata gamonts as revealed by the freeze-etching. A. The general view of fractured epicytic folds; cytoplasm (c), micropore (encircled), cytoplasm of folds (*), groove (g), EF face of external cytomembrane (Ee), EF face of internal cytomembrane (Ei), IMP alignments (arrowhead), PF face of external cytomembrane (Pe), PF face of internal cytomembrane (Pi), plasma membrane (arrow), pores (white arrows). B. The base of the epicytic folds; cytoplasm of folds (*), deutomerite cytoplasm (c), duct (encircled), grooves (g), mucus (x), PF face of the external cytomembrane (Pe), pores (white arrows). C, D. The fracture of the epicytic fold; cytoplasm (c), EF of the external cytomembrane (Ee), EF face of the internal cytomembrane (Ei), PF face of the external cytomembrane (Pe), PF face of the internal cytomembrane (Pi), pores (white arrows), IMP alignments (arrowheads). E. The base of the fold with a duct opening outwards (arrow) to the groove; deutomerite cytoplasm (c), EF of the external cytomembrane (Ee), PF face of the external cytomembrane (Pe), PF face of the internal cytomembrane (Pi). F. The longitudinal fracture of the fold; cytoplasm (c), cytoplasm of fold (*), PF face of the external cytomembrane (Pe), PF face of the internal cytomembrane (Pi), pores (white arrows). G. The grooves (g) between the folds (ef); cytoplasm (c), mucus (x), numerous pores (some of them are shown by white arrows), PF face of the external cytomembrane (Pi). The inset shows a micropore and a pore of smaller size. H. A detail of the grove between folds (ef) showing the part of micropore (arrow) with vesicle (v); deutomerite cytoplasm (c). I. The top of the fold; EF face of the plasma membrane (Ep), IPM alignments (arrowheads), PF face of the external cytomembrane (Pe). The arrowhead in the circle shows the direction of shadowing.