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Just updated my above comment: Nobel prize in chemistry, not physics :D

The research has nothing to do with chemistry anyways so the mistake is understandable :P

But chemistry is the most reasonable field in which to classify those researches, isn't it?

I suppose you could make an argument for this belonging in Physiology or Medicine, but chemistry often goes to molecular biology discoveries so its a bit of a toss up.

I won't argue with the Nobel committees... ;)