Prometheus markets 3D tissues for regenerative medicine and drug testing. We are developing a 3D Lymph Node (3DLN) as preclinical predictive 3D model to test new immunotherapies against cancer. The proprietary 3D Bioprinter enables us to use human living cells as ink, creating a 3D tissue equal to the human one. The 3DLN is composed by immune and cancer cells and has the same cell composition and functionality of human tissue, covering gaps between preclinical results and human responses to drugs. Pharma companies spends €2,5B to develop a new anticancer drug, undertaking 3 experimental phases: on artificial tissues, on animals and on human. The 96% of drugs overcoming the first 2 steps, fails human trials and forced pharma companies to perform other expensive preclinical tests. The failure is due to the lack of translational models predicting in a reliable way the effect of drugs on human. Our predictive 3DLN will incentive the discovery of new anticancer drugs, reducing the needed investment and decreasing animal testing.