Cytogen Corp. of Princeton, N.J., has named James Knill vicepresident of medical affairs. He was previously senior adviserto the Bristol-Myers Squibb Research Institute.

R. Ray Cummings was appointed vice president of businessdevelopment at Celtrix Pharmaceuticals Inc. of Santa Clara,Calif. He was director of corporate licensing at G.D. Searle & Co.

Amgen Inc. of Thousand Oaks, Calif., has promoted Linda Wudlto vice president of quality assurance from director of qualitycontrol. she replaces Daryl Hill, who was named Amgen's seniorvice president, Asia Pacific.

Fred Regnier will take a leave of absence from his position asprofessor of chemistry at Purdue University to become actingchief technical officer at PerSeptive Biosystems Inc. ofCambridge, Mass.

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