Merchant-Taylor International, Inc.

BASF Bioresearch Corp.

Berlex Pharmaceuticals, Inc.

Biotest Pharma GmbH

Boehringer Ingelheim, Inc.

Centocor, Inc.

Cornell University Medical College

European Business Development Group/h2>

G.D. Searle and Company

ImmunoGen, Inc.

John Wayne Cancer Institute

Lederle Laboratories

Ligand Pharmaceuticals, Inc.

Mallinckrodt, Inc.

Memorial Sloan Kettering Cancer Institute

New York Blood Center

North Shore University Hospital

Primedica, Inc.

Sepracor, Inc.

Systemix, a subdivision of Novartis

University of California, San Diego

Vector Securities

Watson Laboratories, Inc.