Abstract: Provided herein are synthetic living tissue structures comprising multiple layers of fibers deposited in solidified form from a 3D bioprinter, together with kits and methods of use related thereto. The fibers comprise a plurality of mammalian cells dispensed within a solidified biocompatible matrix. The structural integrity of the fiber is maintained upon and after deposition without any additional crosslinking. The fiber is continuously bioprinted through at least two layers of the structure. In one aspect, synthetic muscle tissue structures exhibit a readily assayable contractile functionality.

Abstract: A system and method for additive manufacturing of three-dimensional structures, including three-dimensional cellular structures, are provided. The system comprises at least one print head for receiving and dispensing materials, the materials comprising a sheath fluid and a hydrogel, the print head comprising an orifice for dispensing the materials, microfluidic channels for receiving and directing the materials, fluidic switches corresponding to one of the microfluidic channels in the print head and configured to allow or disallow fluid flow in the microfluidic channels; a receiving surface for receiving a first layer of the materials dispensed from the orifice; a positioning unit for positioning the orifice of the print head in three dimensional space; and a dispensing means for dispensing the materials from the orifice of the print head.

Abstract: Provided herein are meniscus implant compositions, as well as methods for making and using the same. The subject meniscus implants find us in repairing and/or replacing damaged or diseased meniscal tissue in a mammalian subject.

Abstract: A system and method for additive manufacturing of three-dimensional structures, including three-dimensional cellular structures, are provided. The system comprises at least one print head for receiving and dispensing materials, the materials comprising a sheath fluid and a hydrogel, the print head comprising an orifice for dispensing the materials, microfluidic channels for receiving and directing the materials, fluidic switches corresponding to one of the microfluidic channels in the print head and configured to allow or disallow fluid flow in the microfluidic channels; a receiving surface for receiving a first layer of the materials dispensed from the orifice; a positioning unit for positioning the orifice of the print head in three dimensional space; and a dispensing means for dispensing the materials from the orifice of the print head.