 Navidea Biopharmaceuticals, Inc. NYSE American: NAVB Navidea or the Company, a company focused on the development of precision immunodiagnostic agents and immunotherapeutics, today announced that it has signed a letter of intent LOI to partner with WorldCare Clinical, LLC for the Companys rheumatoid arthritis RA diagnostic clinical imaging workflow. Per the agreement, WorldCare would serve as Navideas central imaging service provider following FDA approval of Navideas RA diagnostic. WorldCare Clinical is the worlds leading independent contract research organization dedicated to imaging in clinical trials and brings with it over 25 years of clinical trial imaging, commercial clinical imaging, and large-scale data management experience. 