John Clark wrote:
> There is a kick ass paper in today's issue
> of the journal "Nature". Joe Z Tsien of
> Princeton University has used [....]
The full text of the article -- along with some related articles, and a letter or two -- appears to be available for free at Nature's web site (unless someone using my computer signed up for paid on-line access without my knowing it...):
Follow the link from the main page above. (If the link from the main page disappears after a few days, here's the link to the articles. Yes, the URL is that long -->)
This is a fascinating study.