A. 1 cm sample disks of each plastic. Shapeways disks were not photographed. B. Human neuroblastoma cells attached to the bottom of each culture dish well. The acetone created grooves in the plastic, to which cells adhered. Control cells (with acetone treatment but no disk) showed two morphologies, flat, adherent with neurites (red star) and rounded, anchorage-independent (blue star). Exposure to ABS, Nylon 680 and T-glase plastics did not have obvious effects upon cell growth or morphology. Nylon 618 resulted in an extensive loss of cells and PLA resulted in an exaggerated anchorage-independent morphology (green star). Shapeways killed all cells and thus is not shown.