MedImmune Inc., of Gaithersburg, Md., appointed Elizabeth Wyatt to its board; promoted Gail Folena-Wasserman to senior vice president, development; appointed William Bertrand vice president, legal affairs; and named James Pluda vice president and group leader, clinical research.

Microbiotix Inc., of Worcester, Mass., added Terry Bowlin as its chief scientific officer.

Millennium Pharmaceuticals Inc., of Cambridge, Mass., said Robert Tepper, its chief scientific officer and executive vice president, discovery, was appointed to the National Advisory Council for Human Genome Research of the National Institutes of Health.

Neurogenetics Inc., of San Diego, appointed Soan Cheng director, medicinal chemistry.

Sagres Discovery Inc., of Davis, Calif., added Rajen Dalal to its board.

SemBioSys Genetics Inc., of Calgary, Alberta, named Jeff Craig vice president of business development.

VaxGen Inc., of Brisbane, Calif., added Marc Gurwith as senior vice president, medical affairs and chief medical officer.

Vertex Pharmaceuticals Inc., of Cambridge, Mass., appointed Roger Tung to lead the expansion of Vertex’s drug discovery programs at its San Diego site; named Paul Negulescu vice president, discovery biology; and appointed Peter Coassin vice president, instrumentation research and development.