Dr. James Posillico has been named president and CEO ofVitro Diagnostics(Aurora, Colorado). Posillico, who also is a director of the company, has extensive prior experience as an executive of pharmaceutical and medical device firms, including Serono and Cooper Surgical. Posillico replaces Dr. James Musick as president and CEO. Musick has been named chairman of the board, chief operating officer and secretary, and retains his position as CFO. Vitro Diagnostics develops the Vitrocell brand of human cell lines consisting of pituitary and pancreatic-derived cell lines and related products, including optimized growth medium and other products needed for culture of the cell lines.