Dr. von Hofe joined Antigen Express in November of 2003. Prior to this time he held two positions at Millennium Pharmaceuticals; first as Program Director for Target Validation, where he presided over technology development efforts for Aventis and Cereon, and second as Director of Programs and Operations, Discovery Research. He received his Ph.D. from the University of Southern California and was a postdoctoral fellow at the University Hospital of Zurich and Harvard. From 1989 to 1992 he was Assistant Professor of Pharmacology at the University of Massachusetts Medical School.

Dr. Humphreys was the Chief Scientific Officer of Antigen Express from it's inception, and at the time of his retirement held the position of Executive Vice President. Prior to joining Antigen Express, he was Professor of Pharmacology and Medicine, and interim Chair of Pharmacology at the University of Massachusetts Medical School. He received his BS, PhD and MD at Yale, and served in the US Navy at the US Naval Hospital and Naval Medical Research Institute in Bethesda. He was a postdoctoral fellow of Dr. Jack Strominger at Harvard. He has published over 140 peer-reviewed papers and has served 10 years on NIH study sections.

Catherine Blackwell became a member of Antigen Express in January of 2004. She is responsible for managing the business operations of Antigen Express along with grants management and human resources. Preceding her position at Antigen Express, she was the project coordinator and accounting manager for Cyagra Incorporated, a biotechnology company specializing in agricultural cloning. She received her Bachelors degree in Veterinary Science in 1987 from the University of Massachusetts and a Masters degree in Education in 1991 from Anna Maria College.

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