Aradigm Corp., of Hayward, Calif., promoted Stephen Farr to senior vice president and chief scientific officer.

Arius Research Inc., of Toronto, added Diane Kalina to its board.

Bear, Stearns & Co. Inc., of New York, is adding Marina Bozilenko as senior managing director and head of the global healthcare group.

BioSeek Inc., of Burlingame, Calif., added Nolan Sigal to its scientific advisory board.

Celera Genomics Group, of Rockville, Md., appointed Steven Ruben vice president, protein therapeutics.

Cellular Genomics Inc., of Branford, Conn., named Paul Nadler vice president of medical research.

Diatos SA, of Paris, appointed Denis Ravel chief research and development officer and Sandrine Leonardi finance director.

Elixir Pharmaceuticals Inc., of Cambridge, Mass., appointed Bennett Shapiro to its board.

Intersouth Partners, of Durham, N.C., added Chris Hegele as part-time venture partner.

Juvaris BioTherapeutics Inc., of Pleasanton, Calif., appointed John Warner chief scientific officer and vice president of research and development.

Nymox Pharmaceutical Corp., of Maywood, N.J., appointed Brian Doyle senior manager for global sales and marketing.

Pacific Growth Equities, of San Francisco, added Adam Chazan as life sciences tools and diagnostics analyst, Liana Moussatos as biotechnology and biopharmaceuticals analyst and Grace Su to its technology team.