Advanced Chemtech
AFfinity Bioreagents
Biodesign International
Bio-Rad Laboratories
BioSource International
Boehringer Mannheim Biochemicals
Cardinal Associates Inc.
Immunochemistry Technologies
Peninsula Laboratories Inc.
Tropix Inc.
Wako Chemicals USA Inc.
Wallac Inc.
A quick inventory of nearly any molecular biology laboratory these days will turn up a kudzu-like infestation of monoclonal antibodies, fluorescent-tagged secondary antibodies, and immunoassay kits. Immunoassays have become de rigueur for scientists studying cellular proteins. As a result, research supply companies are producing a variety of monoclonal and polyclonal antibodies to an ever-proliferating number of proteins. While each month seems to bring yet another protein into the immunoassay fold, new products are allowing today's scientists to put a new twist on some old themes.

Using antibodies to identify, quantify, and isolate proteins may be a ubiquitous research activity, but new products have scientists turning these workhorses of the immune system into tools to probe the immune system itself. Improvements in...

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