• Peter Gardiner, MD, was named VP of medical affairs and senior medical officer of BG Medicine (Waltham, Massachusetts). Previously, Gardiner was medical director of global medical affairs & senior medical officer for Bristol-Myers Squibb Medical Imaging. BG Medicine makes molecular diagnostics based on biomarkers to improve patient outcomes and contain healthcare costs.

• Kevin Conroy was named president/CEO, and Maneesh Arora senior VP/CFO of Exact Sciences (Marlborough, Massachusetts), effective April 2. They most recently were president/CEO and CFO, respectively, of Third Wave Technologies. Exact Sciences is a molecular diagnostics company focused on colorectal cancer.

• Milestone Scientific (Livingston, New Jersey) said that Leonard Osser, chairman of the board, will temporarily assume the post of interim CEO upon the resignation of Joe Martin, effective March 27, as CEO and a director of the company. Martin is leaving to pursue new career opportunities. Milestone Scientific makes technological solutions for the medical and dental markets.

• Stanley Stein has resigned as president/CEO of Oragenics (Alachua, Florida). David Hirsch, the company's CFO/COO, will assume additional responsibilities as acting CEO and Robert Zahradnik, PhD, VP of business development, will assume the role of acting COO formerly filled by Hirsch. Oragenics is a biopharmaceutical technology company.