BILLERICA, Mass.--(BUSINESS WIRE)--Bruker BioSciences Corporation (NASDAQ: BRKR) today has filed a preliminary proxy statement relating to its previously announced planned acquisition of the Bruker BioSpin Group with the Securities and Exchange Commission. The preliminary proxy is available on the SEC website at: www.sec.gov/Archives/edgar/data/1109354/000104746907009933/a2181510 zprem14a.htm