What about this one?
http://dx.doi.org/10.1107/S0907444912002946
Although the excitation is x-rays and not visible light, you are still
conceivably identifying protein crystals with visible light. Seems to
mostly come from aromatics. Not sure how much damage you have to do to
get enough
My original question was:
Some years ago, I remember hearing about a microscope that used *visible*
light combined with some proprietary image processing algorithm to
distinguish between protein crystals, salt, and background. I can't remember
the company name or researchers involved.
