Fig. 1
From: Clinical and genetic aspects of primary ciliary dyskinesia/Kartagener syndrome
Diversity of ciliary axoneme. Crosssection of nonmotile (9 + 0 arrangement) and motile cilia (9 + 2 and 9 + 0 arrangement) is shown.27,182 Studies to date have not determined whether the 9 + 0 monocilium has radial spokes. The model showing synchronous motion of motile cilia (9 + 2), rotatory motion of motile monocilium (9 + 0), and immotile monocilium (9 + 0). *Solitary axoneme in the sperm mirrors the structure of the cilium. $Subcellular structure of the kinocilum is debatable. Some reports indicate 9 + 0, whereas others indicate 9 + 2 configuration. The function of the kinocilium is also not clear as it disappears during the mammalian early postnatal period.183
