Surgical foil, tantalum metal, by Ethicon Suture Laboratories, used in Dr. PAG Monro's research to study blood flow and the deformation of red blood cells in living circulation with rabbit ear chambers, 1950-1980 Surgical foil used in rabbit ear chamber research 1950-1953
X-ray tube with separate anode, tantalum anti-cathode and automatic mica discharge vacuum regulator, by Siemens and Halske AG, Berlin, Germany, 1908. X-ray tube with separate anode 1908