Samuelsson, Bengt Ingemar (1934-...), is a Swedish biochemist who made significant discoveries concerning prostaglandins and other related substances. Prostaglandins are biochemical compounds, similar to hormones, that occur in the bodies of human beings and other mammals. Samuelsson and his colleagues isolated various prostaglandins and examined their properties. He identified the specific prostaglandins that influence bodily functions, such as temperature, blood pressure, and allergic reactions. For this work, Samuelsson shared the 1982 Nobel Prize for physiology or medicine with fellow Swede Sune K. Bergstrom and with John R. Vane from the United Kingdom.