WILMINGTON, Mass.--(BUSINESS WIRE)--Charles River Laboratories International, Inc. (NYSE: CRL) today reported its results for the fourth-quarter and full-year 2011. For the quarter, net sales from continuing operations were $291.0 million, an increase of 3.3% from $281.7 million in the fourth quarter of 2010. On a segment basis, sales increased in the Research Models and Services (RMS) segment, but declined in the Preclinical Services (PCS) segment.
