ROCHESTER, Minn. (AP) - Mayo Clinic has announced plans to more than double its research capability in Rochester.

The announcement came Tuesday night at a convention of international bioscience companies in San Francisco. Mayo Clinic CEO John Noseworthy and others revealed plans to build a 2 million-square-foot bioresearch campus in downtown Rochester.

Reports say the campus will be the centerpiece of a sub-district in the Destination Medical Center development district. The DMC is a public-private partnership. DMC board chairwoman Lt. Gov. Tina Smith says Rochester is well on its way to becoming "America's capital of health."

Mayo leaders say the development will bring together renowned physicians, researchers, scientists and entrepreneurs in a unique and innovative setting.

Construction is expected to begin in 2017 and be completed within two years.