Normal human serum Albumin by Harvard Medical School, USA, 1939-45. "Double opening" bottle graduated in Cubic Centimetres. Also displayed next to the object were two small plastic tubes indicate they were used with the object. Normal human serum Albumin by Harvard Medical School 1939-45
Normal human serum by Connaught Laboratories, University of Toronto, Canada, 1944. Bottle marked "Normal Human Serum Pooled and Dried." Bottle has webbing handle and a rubber top which is slightly dry. Human serum, Canada, 1944 1944