Complex sentence: While doing summer work in 1982 at the Marine Biological Laboratory at Woods Hole, Massachusetts, Hunt made his most important discovery: using the sea urchin ("Arbacia punctulata") egg as his model organism, he discovered the cyclin molecule.
Split into simpler sentences: While doing summer work in 1982 at the Marine Biological Laboratory at Woods Hole, Massachusetts, Hunt made his most important discovery. Using the sea urchin ("Arbacia punctulata") egg as his model organism, he discovered the cyclin molecule.