RXi Pharmaceuticals Corporation announced the appointment of Dr. Rolf Kiessling, Professor in Experimental Oncology at Karolinska Institutet to its Scientific Advisory Board.  Dr. Kiessling also serves as Senior Chief Physician of Radiumhemmet at Karolinska Hospital. Dr. Kiessling has broad scientific expertise in the field of experimental and clinical immunology and accredited with the discovery for Natural Killer cells (NK cells) during the mid-70's.