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Clinical Chemistry 51: 1896-1901, 2005. First published August 11, 2005; 10.1373/clinchem.2005.056572
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(Clinical Chemistry. 2005;51:1896-1901.)
© 2005 American Association for Clinical Chemistry, Inc.

History

Joachim Kohn (1912–1987) and the Origin of Cellulose Acetate Electrophoresis

Richard M. Rocco

1 Department of Biology, San Francisco State University, San Francisco, CA.

Address for correspondence: PO Box 3159, Los Altos, CA 94024. E-mail rmrocco{at}comcast.net.


Abstract

The year 2006 marks the 50th anniversary of the discovery of cellulose acetate (CA) electrophoresis by Joachim Kohn, a pathologist at Queen Mary’s Hospital in Roehampton, London. During a career in pathology that began in 1950 and spanned 37 years, Kohn published more than 50 papers in clinical laboratory medicine. He was the first to report the use of CA microbiology filters as solid supports for zone electrophoresis and the separation of hemoglobin phenotypes on CA membranes. Kohn also invented a new electrophoresis chamber and an 8-position stamp applicator especially for use with CA membranes. Beginning in 1957, Kohn pioneered the development of CA techniques for immunoelectrophoresis, counter immunoelectrophoresis, radial immunodiffusion, protein blotting, and immunofixation. He also designed a transport dressing for burn patients and was the first person to describe the use of an enzyme-based dipstick for measuring fingerstick blood glucose concentrations. This short review highlights Kohn’s discovery of CA electrophoresis and his contributions to the development of this procedure.






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Copyright © 2005 by the American Association for Clinical Chemistry.