For a decade, I had been studying a transparent worm, the C. elegans. I immediately thought, if you could put the G.F.P. gene into C. elegans, you'd then be able to see biological processes in live animals. Until then, we had to kill them and prepare their tissues chemically to visualize proteins or active genes within cells.

One of the great things about working on C. elegans was the fact that it was transparent, and so when I first heard that seminar describing GFP, and realised, 'I work on this transparent animal, this is going to be terrific! I'll be able to see the cells within the living animal.'

People don't generally listen to scientists much.

Martin Chalfie Quotes