Aprogenex Inc., of Houston, appointed Luis Cantarero vice presidentof research and development.Bio-Technology General Corp., of Iselin, N.J., named Jane CahillPfeiffer, a business consultant and former chairman of the NationalBroadcasting Co. Inc., to the board of directors and Ronald Simko vicepresident of manufacturing.BioTime Inc., of Berkeley, Calif., appointed John Watson chiefoperating officer.Epitope Inc., of Beaverton, Ore., named Roger Beachy, of the ScrippsResearch Institute in La Jolla, Calif., and Peter Bristow, of WashingtonState University, to Epitope's scientific advisory board.GelTex Pharmaceuticals Inc., of Waltham, Mass., named Steven Burkemedical director.Gene-Probe Inc., of San Diego, appointed Henry L. Nordoff presidentand CEO.Immunex Corp., of Seattle, appointed Kathy Spencer vice president ofhuman resources.La Jolla Pharmaceutical Co., of San Diego, named Steven Englepresident and chief operating officer.Magenta Corp., of Rockville, Md., named Dominick Vacantedevelopment director and Karen Darcy production planning director.North American Biologicals Inc., of Miami, appointed David Castaldi,co-founder of Cambridge, Mass.-based BioSurface Technology Inc., tothe board of directors.Organogenesis Inc., of Canton, Mass., named Bjorn Olsen, of HarvardMedical School, to the board of directors.

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