HEPREGEN ANNOUNCES PUBLICATION OF SEVERAL SCIENTIFIC PAPERS PROVIDING EVIDENCE OF THE UNPRECEDENTED UTILITY OF ITS HEPATOPACTM PRODUCTS MEDFORD, Mass., Feb. 12, 2014 (GLOBE NEWSWIRE) -- Hepregen Corporation, leader in the development of next generation HepatoPacTM and HepatoMuneTM cell-based in vitro assay products, announced today...