Indeed, we often mark our progress in science by improvements in imaging.
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.'
None of the standard high school science courses made much of an impression on me, but I did enjoy the Advanced Placement Chemistry course I took in my senior year. This course had only eleven students and was taught by a rarity for our school, an exchange teacher from England, Mr. Leslie Sturges.
The prize was really for the molecule. In 1962, Osamu Shimomura discovered a protein in a jellyfish that caused it to glow bright green. With colleagues, 30 years later, I was able to insert this G.F.P. gene into bacteria and make them turn green.
We have found that fusions of GFP with the RING finger domains of certain E3 ubiquitin ligases creates an unstable GFP. We have used unstable GFP to learn how disruption of microtubules in the touch receptor neurons causes a generalized reduction in protein levels in the cells.
