Additional file 4: of The cellular basis of bioadhesion of the freshwater polyp Hydra

Cytochemistry of Hydra basal disc. a longitudinal section of a basal disc stained with alcian blue. Basal disc cells did not react for acidic mucopolysaccarides. b Longitudinal section through a Hydra tentacle. Nematocytes were alcian blue positive (arrows) corroborating the method used was correct. Scale bars 100 μm (a), 50 μm (b). Abbreviations: bd, basal disc; m, mesoglea; en, endoderm (TIF 3667 kb)