“…Needless to say, there were many inspiring ‘Great Names’ in Cambridge, and Burgen figured among them. He had become a pioneer in the use of nuclear magnetic resonance in pharmacology (Aellig, 1990 ). Among other important lessons, Phil learned how to use radiolabelled irreversible antagonists to visualize membrane receptors and it was in Cambridge that he learned about the fast interconversion of different receptor states.…”