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Lifshitz Law Firm, P.C. Announces Investigation of Pfenex Inc. (NYSE: PFNX), Proteostasis Therapeutics, Inc. (NASDAQ: PTI), Rosetta Stone Inc. (NYSE:RST) and Yintech Investment Holdings Limited (NASDAQ: YIN)
PTI· Proteostasis Therapeutics, Inc.YIN· Yintech Investment Holdings LimitedRST· Rosetta StonePFNX· Pfenex Inc.
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