I ran the author's name through google and then checked the Chemical & Engineering News website and, la voila, there it was. Chemical & Engineering News is a great publication and one that probably relatively few of us read on a regular basis. The publication's name might have been a bit daunting, though.
At last I know what a heterodimer and a homodimer are!
This story seems to be from
http://pubs.acs.org/cen/coverstory/84/8432cancer.html
and there are interesting additional pictures there as well.