LifeCell Corp., of Branchburg, N.J., appointed Fred Feldman senior vice president, product development and quality.

Merz Inc., of Greensboro, N.C., a subsidiary of Merz Group, named Terry Conrad president and CEO and Rob Burgess was named chief financial officer and vice president of administration.

Nastech Pharmaceutical Co. Inc., of Bothell, Wash., added Henry Costantino as senior research scientist.

Neose Technologies Inc., of Horsham, Pa., appointed Benjamin Del Tito vice president, analytical and quality control.

Northfield Laboratories Inc., of Evanston, Ill., named Jay Kleiman vice president of clinical affairs.

Nuvelo Inc., of Sunnyvale, Calif., appointed Hana Moran vice president of regulatory affairs and quality assurance.

PharmaMar SA, of Madrid, Spain, appointed Miguel Izquierdo director of the clinical research department.

Pharsight Corp., of Mountain View, Calif., named Farkad Ezzet senior scientist for its strategic consulting group.

PTC Therapeutics Inc., of South Plainfield, N.J., appointed Lee Sweeney to its scientific advisory board.

Quark Biotech Inc., of Fremont, Calif., appointed John Delyani vice president of business development.

Sirna Therapeutics Inc., of Boulder, Colo., added Scott Greer to its board.

Spectral Genomics Inc., of Houston, appointed Robert Johnson president and chief operating officer.

TargeGen Inc., of San Diego, appointed Mark Green to its scientific advisory board.

VisEn Medical Inc., of Woburn, Mass., appointed Dean Falb vice president of research and development and Wael Yared director of imaging systems.

Xceleron Ltd., of York, UK, added Alan Wilson to its board and Jeremy Hague as European business development manager.