A non-motile cilium where the axoneme has a ring of nine outer microtubule doublets plus two central microtubules (and is therefore called a 9+2 axoneme). [ http://www.ncbi.nlm.nih.gov/pubmed/21307074 GOC:cilia http://www.ncbi.nlm.nih.gov/pubmed/22118931 ]
Synonyms: non-motile 9+2 cilium
Term information
This type of cilia may be present in solitary (e.g. in inner hair cells) or in multiple copies (e.g. in olfactory neurons).