| These vibrations then stimulate the cilia, which transmit a nerve impulse to the brain informing the shark of the location of the source. |
| However, unlike cnidarians, ctenophores possess rows of cilia and a unique, complex sensory organ and lack cnidae and metagenesis. |
| In the present study we were unable to observe cilia in any presumptive ciliate protozoan. |
| Ectopic cilia are particularly irritating and likely to cause corneal ulcers. |
| The planulae of most cnidarians attach and lose, at most, a coat of swimming cilia. |
| The luminal surface of the epithelial cells contained few irregular cytoplasmic projections, but cilia or microvilli were absent. |
