DUBLIN, Ohio--(BUSINESS WIRE)--Navidea Biopharmaceuticals, Inc. (NYSE MKT: NAVB), a biopharmaceutical company focused on precision diagnostic radiopharmaceuticals, noted today that individual site, investigator-initiated results of an ongoing Phase 3 clinical trial of 99m-Tc-Tilmanocept (Lymphoseek®) were presented at the American Head and Neck Society’s 8th International Conference on Head and Neck Cancer (ICHNC), held in Toronto, July 21-25, 2012. Investigators from the University of Texas MD Anderson Cancer Center, The Ohio State University and the University of Miami reported their personal experiences with the use of Lymphoseek in head and neck squamous cell carcinoma.