Type XIV collagen, also known as undulin, is a member of the fibril-associated collagen with interrupted triple helix (FACIT) class. It interacts with the fibril surface and has been implicated as a regulator of fibrillogenesis. Type XIV collagen is prevalent in skin, tendon, cornea, and articular cartilage, specifically in areas of high mechanical stress (Berthod et al. 1997). It is possible that collagen XIV modifies the interaction of fibrillar collagen (e.g. collagens I or II) with the surrounding matrix (Gerecke et al. 2003).