Hi! Sorry for the spam-like post, but I can't remember who posted the original question...
Someone asked about tools for drawing pictures of biomolecules like proteins. My mom responds that she knows a variety of tools, but they aren't readily usable by non-scientists. She herself uses a very complex tool that represents 3D structures with stereoscopic pictures that you should view with a special optical viewer. Some people can master the trick of viewing them by crossing their eyes; Oliver Sacks (as usual) wrote a fascinating article about this in the New Yorker just last week! Other tools can draw 2D representations of 3D structure. These tools are readily available, but they do assume you know a fair amount of biochemistry! My mom suggests that authors may allow reproductions of real pictures for non-commercial purposes. For commercial illustrations, she suggests clip-art. I hope this helps. If the OP has questions or clarifications he or she can contact me directly. Joe TuVox, Inc. 19050 Pruneridge Avenue Suite 150, Cupertino, CA 95014-0715 Joe Malin Technical Writer (408)625.1623 jmalin at tuvox.com www.tuvox.com <http://www.tuvox.com/> The views expressed in this document are those of the sender, and do not necessarily reflect those of TuVox, Inc.