Document Type

Article

Publication Date

2-1986

Publication Title

Proceedings of the National Academy of Sciences

Volume

83

First Page

797

Last Page

801

Comments

The publication costs of this article were defrayed in part by page charge payment. This article must therefore be hereby marked "advertisement" in accordance with 18U.S.C.§1734 solely to indicate this fact.

Included in

Biology Commons

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.