EAST MILLSTONE, N.J.--(BUSINESS WIRE)--Life Sciences Research, Inc. (NYSE Arca: LSR) announced today that revenues for the quarter ended December 31, 2007 were $63.4 million, 20.9% above the revenues for the same period in the prior year of $52.5 million. Excluding the effect of exchange rate movements, revenues increased 15.0%. Operating income for the quarter ended December 31, 2007 was $9.6 million, or 15.1% of revenues, compared with an operating loss of $5.0 million for the same period in the prior year. In the fourth quarter of 2006 the Company incurred Other Operating Expenses of $10.5 million, predominantly associated with the Company’s NYSE Arca listing, excluding this charge Non GAAP operating income would have been $5.5 million or 10.4% of revenues. The Company reported net loss for the quarter ended December 31, 2007 of $28.8 million compared with net income of $1.5 million for the quarter ended December 31, 2006. Net loss per common and fully diluted share was $2.28 for the three months ended December 31, 2007 compared with net income per common share of $0.12 and per fully diluted share of $0.10 for the three months ended December 31, 2006.