X0206 3 2014-02-17 1 0000810509 NAVIDEA BIOPHARMACEUTICALS, INC. NAVB 0001260573 KARSEN PERRY A 425 METRO PLACE NORTH SUITE 450 DUBLIN OH 43017 1 EXHIBIT INDEX Exhibit 24 - Power of Attorney William J. Kelly, Jr., Attorney-In-Fact 2014-02-18