Fig. 9From: Review of additive manufactured tissue engineering scaffolds: relationship between geometry and performanceCurved layers were used in order to print a multi-material object with the following stages: a support material, b sacrificial layer, c lower skin, d porous core, and e upper skin. f CAD model of the object. Figure adapted under the Creative Commons CC-BY licence from the original article of Allen and Trask [55]Back to article page