Skip to main content

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.

Volume 29 Issue 11, November 1997

Regular Article

Top of page ⤴

Note

Top of page ⤴

Short Communication

Top of page ⤴

Search

Quick links