Dupont (UK) Ltd., Industrial Products Division, Wedgwood Way, Stevenage, Herts, SGI 4Q, UK.
Du Pont Co. (Biotechnology Systems Division), P.O. Box 80024, Wilmington, DE 19880-002, USA.
Enzyme Systems Products, 6497 Sierra Lane, Dublin, CA 94568, USA.
European Collection of Animal Cell Culture, Division of Biologies, PHLS Centre for Applied Microbiology and Research, Porton Down, Salisbury, Wilts SP40JG, UK.
Falcon (Falcon is a registered trademark of Becton Dickinson and Co.).
Fisher Scientific Co., 711 Forbest Avenue, Pittsburgh, PA 15219-4785, USA.
Flow Laboratories, Woodcock Hill, Harefield Road, Rickmansworth, Herts. WD3 1PQ, UK.
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