Medco Health Solutions announced yesterday it will acquire United BioSource to extend its business into healthcare-related technology, information services and research. Medco, the Franklin Lakes-based pharmacy benefits manager, said it will pay approximately $750 million for the medical research firm. United BioSource, a closely held company in Bethesda, MD, is considered a leading provider of post-approval drug and medical device research. The company is expected to generate $280 million in revenue for 2010.