See note 2 And never mind the minor point that dynein for example has cytoplasmic versions with diverse transport functions in the cell apart from intraflagellar transport, including involvement in mitosis, and the fact that dynein itself is the primary motor protein of cilial motility, and that dynein has widespread homologs in eukaryotes and prokaryotes.    From Wordnik.com.  [Of cilia and silliness (more on Behe) - The Panda's Thumb] Reference