According to @Techno-TechNik, a study published in the journal Advanced Science, Israeli researchers used human materials and fines

According to @Techno-Daily, a study published in the journal Advanced Science, Israeli researchers used human materials and cells to design functional 3D human spinal cord tissue for the first time and implant it in an animal model of chronic paralysis for a long time. Experimental results show that 80% of the test subjects regained the ability to walk. The significance of this breakthrough lies in the use of tissue samples from patients, which are converted into functional spinal implants by mimicking the process of spinal cord development in human embryos.

Professor Tal De Vere of the Sagol Centre for Regenerative Biotechnology at Tel Aviv University explains: "Our technology is based on fatty tissue collected from a patient's abdomen. This tissue, like all tissues in the body, consists of cells and an extracellular matrix, including substances such as collagen and sugars. After isolating the cells from the extracellular matrix, we genetically engineered the cells to restore them to a state similar to embryonic stem cells. Using the extracellular matrix, we created a personalized hydrogel that does not cause an immune response or rejection after implantation. We then encapsulate the stem cells in a hydrogel, and in the process of mimicking spinal cord embryonic development, the cells are transformed into 3D neural network implants containing motor neurons.