Mark D. Tucker

Dow Chemical Co. Ltd. manufactures ethylene oxide & ethylene glycol, bonding, and sealing agents. The firm provides products for the automotive industry, herbicides, polystyrene, and pharmaceutical intermediates. The company is headquartered in West Drayton, UK

Ventana Medical Systems, Inc. develops tissue-based diagnostic solutions. It designs and delivers medical diagnostic systems and slide-based cancer tests. Its products include absolute Eosinophil count (AEC) detection kit intended for laboratory use to identify targets by immunohistochemistry (IHC) in sections of formalin-fixed, paraffin-embedded tissue or frozen tissue on a BenchMark and BenchMark XT instrument and DISCOVERY XT research instrument that brings automation, reproducibility, and productivity to IHC and in situ hybridization (ISH) slide preparation and processing. The company was founded by Thomas M. Grogan in 1985 and is headquartered in Phoenix, AZ.