A bundle of hundreds of cross-linked actin filaments (an actin cable), that is the supporting structure of a stereocilium. Filaments are oriented such that the the plus (barbed) ends are at the tip of the protrusion and are capped by a tip complex which bridges to the plasma membrane. [ http://www.ncbi.nlm.nih.gov/pubmed/15661519 ]
This is just here as a test because I lose it