Avigen Inc., of Alameda, Calif., added Dawn McGuire as chief medical officer.

BioCrossroads, of Indianapolis, appointed August Watanabe chairman.

Bioenvision Inc., of New York, elected Michael Kauffman to its board.

Buck Institute for Age Research in Novato, Calif., appointed Richard Rosenberg, Charles Epstein and Patrick Soon-Shiong as members of its board of trustees.

California Healthcare Institute, of La Jolla, Calif., elected David Fleming to its board.

Cell Therapeutics Inc., of Seattle, added Steve Aselage as executive vice president of global commercial operations, appointed Jack Singer as chief medical officer and Silvano Spinelli executive vice president of development and managing director of European operations. The company also added Giuseppe Dastoli as vice president of business and commercial operations in Europe and Silvia Comis will be responsible for clinical development in Europe.

Cellegy Pharmaceuticals Inc., of South San Francisco, elected Robert Rothermel to its board.

Cenix BioScience GmbH, of Dresden, Germany, added Zisi Fotey as chief business officer.

Chiron Corp., of Emeryville, Calif., said Howard Pien, president and CEO, was elected to the board of California Healthcare Institute.

Ciphergen Biosystems Inc., promoted Martin Verhoef to president of its unit Ciphergen Biosystems Division.