Fig. 6From: Catostylus tagi: partial rDNA sequencing and characterisation of nematocyte structures using two improvements in jellyfish sample preparationNematocytes of  C. tagi viewed with von Kossa staining sing optical microscopy. The black circle around or dots inside nematocytes are considered positive for calcium salts. Arrows highlight operculum. a and d Euryteles. b and d Isorhizae. Bars: (a) 4 μm; (b and c) 5 μm; (d) 3 μmBack to article page