Fig. 5

Scanning electron microphotographs of B. glabrata tentacle. a, b The normal ultrastructure of a B. glabrata tentacle with plenty of fine cilia and conspicuous surface folds (a, arrow). c, d The tentacle folds became flat due to swelling after a 24-h exposure to 0.070 mg/l niclosamide (c, arrow). The number of cilia decreased significantly, and the cilia were disorderly distributed. e, f The tentacle folds also became flat after a 24-h exposure to 0.261 mg/l salicylanilidate (e, arrow), but the cilia density was similar to that of a normal snail