Advanced Tissue Sciences Inc. (ATS) announced Wednesdaythat the underwriters for its recently concluded public offeringhave exercised their option to purchase 375,000 shares of stockat $8 per share to cover overallotments from the offering.

The purchase brings the company's gross proceeds from theoffering to $23 million. The offering was managed byMontgomery Securities, Dillon, Read & Co. Inc. and SmithBarney Shearson Inc.

The La Jolla, Calif., company's stock (NASDAQ:ATIS) gained 13cents on Wednesday, closing at $8.50 per share.

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