Hi Dan,
Not sure I understand it either.
Its one thing making a new discovery, by painting a cancer in a laboratory and detecting a subtle change in frequency or colour. As the article implies.
But its quite another to detect a fluorecent or colour change, under the bright lights of an operating theatre, while possibly operating upon a patient?.
If that is to be the final idea.

I picked up a similar but very different theme, when I wrote about the 'Amazing iKnife Invention' regarding Cancer, a few days ago, on the 18th July. Under the General Science Heading.

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"You will never find a real Human being - Even in a mirror." ....Mike Kremer.