Seeding of HUVECs on COC structures obtained by molding from ablated quartz micro-holes produced by treatment at c = 10, Nsteps = 10 and (a)–(c) Pavg = 35 W and (d) Pavg = 40 W. (a), (b) The five channels represent the bright field, the response of phallodin-TRITC (red), DAPI (blue), ZO-1 (green) and merge between DAPI and ZO-1 channels. (c), (d) The four channels represent the response of phallodin-TRITC (red), DAPI (blue), ZO-1 (green) and merge between DAPI and ZO-1 channels. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)