Abstract: The present invention relates to a 3D bioprinted skin tissue model, a method for providing said model and the use of said model. The 3D bioprinted skin tissue model comprises at least one bioink A, at least one cell type A, at least one factor A, wherein the bioink A comprises at least one biopolymer, a thickener, at least one extra-cellular matrix or a decellularized matrix, and optionally a photo initiator and/or cellular additions, the at least one cell type A is an epidermal, dermal and/or hypodermal cell or cell line, and the at least one factor A is a growth factor, protein and/or molecule that stimulates altered or abnormal metabolism of cell type A.

Abstract: The present invention provides for a liver tissue model construct composed of biomaterials and cells, to be used for scientific research within in the 3D liver tissue modelling field. The applications of said tissue model construct can be specific for pharmaceutical evaluations and/or discoveries, regenerative medicine investigations, tissue engineering developments, and liver physiology and/or pathology.

Abstract: A perfusion device for printing a 3D construct with internal channels is disclosed. The device comprises a housing with an internal chamber, the chamber configured to hold the construct, and having a bottom plate configured to support the construct, the chamber comprising at least one inlet or outlet configured to introduce a liquid from outside the chamber into the chamber or vice versa. The at least one inlet or outlet comprises an connector adapted to connect or align the one or more internal channels within the 3D construct to the inlet or outlet when the 3D construct is present in the chamber. Further a method for printing a 3D construct with at least one internal channel is disclosed.