Navidea Biopharmaceuticals, Inc. is a biopharmaceutical company focused on the development and commercialization of precision immunodiagnostic agents and immunotherapeutics. The Company is developing multiple precision-targeted products based on the Manocept platform to help identify the sites and pathways of undetected disease. The Manocept platform is predicated on the ability to specifically target the CD206 mannose receptor expressed on activated macrophages. The Company focuses on two types of drug products diagnostic substances, including Tc99m tilmanocept and other diagnostic applications of Manocept platform, and NAV4694; and therapeutic development programs, including therapeutic applications of Manocept platform.