BioCAD™ is an intuitive, easy to use drawing suite that allows scientists and biomedical designers to design tissues, patterns, and scaffolds within minutes. There is no need for pre-existing 3D models or medical images, since BioCAD™ has all the necessary tools that allow you to design multima- terial models from scratch. The ECM-BioInk™ portfolio contains 5 formulations that differ from each other in the electrical net charge which impacts the matrix stiffness and consequently cell proliferation capacity.