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Harborside Healthcare has agreed to purchase 11 long-term care facilities operated by Wells Health Systems Inc. of Owensboro, KY, as part of its continued growth in that part of the country, company officials announced Monday.

Boston-based Harborside ranked 15th in bed volume among nursing homes in the U.S. in 2005 after acquiring the operations of nine long-term care facilities in Kentucky. These latest 11 acquisitions consist of a total of 763 beds in eight rehabilitation and long-term care centers, two Alzheimer’s disease specialty facilities and an assisted living center.

While the exact terms of the agreement between the two private companies have not been disclosed, the companies said they expect to complete the transaction by Oct. 1.