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NEW YORK (Reuters) - Some of the industry’s largest pharmaceutical companies, including Pfizer Inc ( PFE.N ) and Eli Lilly and Co ( LLY.N ), have developed a blockchain-based system to track prescription drugs across the supply chain to better halt the flow of counterfeit medicines, company officials said on Friday. FILE PHOTO: The Pfizer logo is seen at their world headquarters in Manhattan, New York, U.S., August 1, 2016. REUTERS/Andrew Kelly. Some two dozen companies in the industry including drugmakers, distributors, retailers and delivery firms created the blockchain-based MediLedger Network, which it has been testing in the verification of drug returns. They said they intend to further expand the system this year. Full story

21 February