Since tenascin-W often shares physiological and tumor-associated expression, as well as functional similarities with tenascin-C, it was not surprising to learn that tenascin-W is present in stem cell niches as well (e.g., corneal limbus and whisker follicles; see above) (Scherberich et al., 2004; Tucker et al., 2013). This evidence concerns the gene TNN and neoplasm.