Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Will increasingly bitter patent disputes stifle scientific medical research? A recent Commentary article about a sandwich immunoassay has provoked this exchange.
The contemporary chemistry journals deserve to be more widely read, not just for what chemists have to say about the natural world, but for the daring of the empirical generalizations in which chemists seem to specialize.
Essential lipid mixtures can substitute for vertebrate serum in the culture of invertebrate — and some vertebrate — cells, tissues, parasites and pathogens. The resulting membrane lipid modifications promote hormonal signalling.
Over 500 exhibitors will be represented at next week's Biotechnica '90 to be held in Hannover, West Germany. Featured exhibits will include a primer analysis software package and a hollow-fibre bioreactor for monoclonal antibody production.
