Pål K. Selbo is a photobiologist and obtained his PhD from the University of Oslo (2001) in the lab of Kristian Berg at The Norwegian Radium Hospital. From 2002-2003 had had a post doc stay in the lab of Tayyaba Hasan in Boston. Currently, he is the acting group leader of the Photochemical Internalization (PCI) group at the Department of Radiation Biology, Oslo University Hospital, President of the Norwegian Society for Photobiology and Photomedicine (NOFFOF) and the President-elect of the European Society for Photobiology (ESP). The main research focus of his group is PDT therapy resistance, photochemical based targeting of cancer stem cells and using the intracellular drug delivery technology PCI to enhance the efficacy of cancer immunotherapies.