Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Distribution of assets by technological field. Pharmaceuticals (20.0% - color blue); Macromolecular chemistry, polymers (5.0% - color orange); Food chemistry (20.0% - color grey); Chemistry of basic materials (5.0% - color yellow); Other special machines (5.0% - color brown); Biotechnology (45.0% - color green). (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
