“…Anisotropic surfaces such as grooved substrata can control cell shape, orientation, division, and the direction of cell migration [Brunette, 1986a;Clark et al, 1990;Oakley and Brunette, 1993;Oakley et al, 1997;Walboomers et al, 1999Walboomers et al, , 2000Walboomers and Jansen, 2001;Dalby et al, 2003;Hamilton et al, 2005a;. This phenomenon is termed topographic or contact guidance [Dunn and Heath, 1976;Brunette, 1986a;Clark et al, 1987Clark et al, , 1990Curtis and Wilkinson, 1998] and is exhibited by a variety of cell populations contacting grooved substrata of various chemical compositions, fabricated by different techniques and having different groove/ridge geometries and dimensions [Brunette et al, 1983;Chehroudi et al, 1988;Clark et al, 1991;den Braber et al, 1995den Braber et al, , 1996Walboomers et al, 1998;Miller et al, 2001;Dalby et al, 2003;Curtis et al, 2005;Evans et al, 2005].…”