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. 2015 Mar 18;7(3):936–950. doi: 10.3390/toxins7030936

Figure 2.

Figure 2

Light microscopy (LM) of C. fleckeri nematocysts histochemically stained with Masson’s Trichrome. (A) The orientation of undischarged nematocysts in longitudinal section showing top batteries (TB), intermediate batteries (IB) and lower batteries (LB); (B) Undischarged large oval p-rhopaloid (black arrowhead) and atrichous isorhiza (white arrow); (C) Undischarged microbasic p-mastigophores (white arrowhead) and small sub-spherical p-rhopaloid (black arrow); (D) Discharged tentacular axis region showing gastrovascular cavity (GC), mesoglea (M), and epidermis (E); (E) Detail of epidermis evagination with ethanol discharged nematocysts. Note the nematocyst batteries; (F) Part of the epidermis showing the extruded tubules (black arrow). Note the empty capsule (black arrowhead). Scale bars, A, D, E, F 100 µm; B, C 50 µm.