Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.
Skip to main content
DOI

10.1126/science.8493535

Type

Journal article

Journal

Science

Publisher

American Association for the Advancement of Science (AAAS)

Publication Date

14/05/1993

Volume

260

Pages

979 - 983