Dear Colleagues

During the last decade enormous advances have been achieved regarding 3D bioprinting of biomaterials. Highly complex constructs can now be produced using innovative printable bioinks of various materials including cells and / or bioactive molecules as well as employing multilayered and highly diverse printing techniques. This special issue aims to summarize innovative approaches addressing new bioinks and new techniques of three-dimensional bioprinting thereby presenting and discussing new trends and strategies. New biomaterials that can be used for different tissue engineering application will be introduced, the evolving problems discussed and creative innovative solutions introduced. One focus will be on new bioinks combining various materials as well as cells and bioactive molecules and their way to medical application.