WILMINGTON, Mass.--(BUSINESS WIRE)--Charles River Laboratories International, Inc. (NYSE: CRL) today reported its results for the second quarter of 2016. For the quarter, revenue from continuing operations was $434.1 million, an increase of 27.8% from $339.6 million in the second quarter of 2016. Foreign currency translation reduced reported revenue growth by 0.4%. Revenue growth was driven primarily by the Discovery and Safety Assessment and Manufacturing Support segments. Research Models and Services revenue also increased. The acquisitions of WIL Research, Celsis, Oncotest, and Sunrise Farms contributed 19.4% to consolidated second-quarter revenue growth, both on a reported basis and in constant currency.