Amersham PLC

Amgen, Inc.

ArQule, Inc.

Biogen Idec Inc.

Biogen Inc.

Caliper Life Sciences, Inc.

Centocor Inc.

Charles River Laboratories International, Inc.

Chiron Corporation

Covance Inc.

CryoLife, Inc.

Cytyc Corporation

Dionex Corporation

Embrex, Inc.

Enzo Biochem, Inc.

Eurofins Scientific S.A.

Gen-Probe Incorporated

Gilead Sciences, Inc.

Howard Hughes Medical Institute

Huntingdon Life Sciences Group plc

IDEXX Laboratories, Inc.

ImClone Systems Inc.

Immunex Corporation

Incyte Genomics, Inc.

Inverness Medical Innovations, Inc.

Invitrogen Corporation

Life Technologies, Inc.

LifeCell Corporation

Lonza Group Ltd.

Martek Biosciences Corporation

Millipore Corporation

Minntech Corporation

Mycogen Corporation

New Brunswick Scientific Co., Inc.

Pacific Ethanol, Inc.

Qiagen N.V.

STERIS Corporation

Seminis, Inc.

Serologicals Corporation

Sigma-Aldrich Corporation

Starkey Laboratories, Inc.

Stratagene Corporation

TECHNE Corporation

Tanox, Inc.

The Judge Group, Inc.

TriPath Imaging, Inc.

Waters Corporation

Whatman plc

Wisconsin Alumni Research Foundation

Wyeth

bioMérieux S.A.

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