Navidea Biopharmaceuticals Inc. announced that it has executed a Letter of Intent (LOI) with Cardinal Health for the sale of all rights, title and interest to Navidea’s Lymphoseek product. The agreement covers all U.S. Food and Drug Administration (FDA)-approved, pending and future oncology diagnostic indications in North America, subject to certain limitations, as well as certain other related assets. Under the terms of the LOI, Navidea would receive $80 million at closing, with future consideration tied to annual sales of the Lymphoseek product and certain sales-based milestones. Total consideration to Navidea would be capped at $310 million.