5 Pharmaceutical preparations for medical and surgical purposes in the nature of implantable materials comprised of living tissue, namely, hydrogels; pharmaceutical preparations for embolization therapy in interventional radiology and oncology in the nature of implants comprised of living tissue, namely, hydrogels; medical preparations for embolization therapy in interventional radiology and oncology in the nature of implants comprised of living tissue, namely, hydrogels; preparations for implantable surgical materials in the nature of implants comprised of living tissue, namely, hydrogels; pharmaceutical preparations for implantable hydrogel-based embolics; pharmaceutical preparations, namely, embolization therapy preparations for embolization of tumors; medical preparations for embolization therapy systems for the treatment of hypervascular tumors and blood vessels to stop blood flow and control bleeding and hemorrhaging; medical preparations for vascular embolization, hemorrhage control, and peripheral hemostasis; medical preparations used for embolization of vascular lesions, tumors, targeted arterial segments of hypervascular tumors, control of bleeding due to disease or trauma, organs and segmental embolizations; pharmaceutical preparations, namely, differentiated liquid embolic agents for embolization of hypervascular tumors and blood vessels to stop blood flow and control bleeding and hemorrhaging; pharmaceutical preparations for medical and surgical purposes in the nature of implantable materials comprised of artificial materials, namely, hydrogels; pharmaceutical preparations for embolization therapy in interventional radiology and oncology in the nature of implants comprised of artificial materials, namely, hydrogels; medical preparations for embolization therapy in interventional radiology and oncology in the nature of implants comprised of artificial materials, namely, hydrogels; preparations for implantable surgical materials in the nature of implants comprised of artificial materials, namely, hydrogels