Goldman Just Downgraded These Three Life Science Stocks By: Benzinga via Benzinga December 08, 2015 at 08:15 AM EST Shares of PerkinElmer, Inc. (NYSE: PKI), Laboratory Corp. of America Holdings (NYSE: LH) and Danaher Corporation (NYSE: DHR) have ... Read More >> Related Stocks: Danaher Corp Laboratory Corp American Holdings PerkinElmer