Pharmaceutical preparations namely, a three-dimensional (3D) bioprinted drug delivery system comprised of hydrogel-based and polymer-based bioinks for the creation of biological tissues for medical purposes; biological tissue cultures for medical purposes; tissue-regenerative pharmaceutical preparations; Biologically compatible materials, namely, hydrogels used to create polymeric networks for three-dimensional (3D) tissue models, vascular structures, scaffolds, and biological tissue specimens capable of mimicking different types of human tissues for medical use and scientific research; Biologically compatible materials, namely, polymers for use in three-dimensional (3D) tissue models, vascular structures, scaffolds, polymeric networks, and biological tissue specimens capable of mimicking different types of human tissues for medical use and scientific research; biological products for non-medical use, namely, reagents for scientific and medical research use; Drug screening for scientific research purposes; Scientific research; biological research; scientific and technological consulting services in the cell biology and life sciences industry, and research and design relating thereto; research, design and development of tools for tissue testing; research, design and development of instruments and devices for stem cell research; research, design and development of instruments and devices for three-dimensional (3D) bioprinting; research, design and development of tools for three-dimensional (3D)printing of biological products, biological tissues and proteins; Drug screening for medical purposes