Xconomy.com -- Cubist Pharmaceuticals has grown into one of the big success stories in biotech industry of the past few years, based almost entirely on the sales of a single product. The Lexington, MA-based company’s big hit is an intravenous antibiotic for deadly infections called daptomycin (Cubicin). Even though this has propelled Cubist into profitable territory, the company’s (NASDAQ:CBST) stock price has been flat for more than four years amid concerns on Wall Street about potential threats to its antibiotics franchise.
