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As she completed the final pass, the screen settled into a steady, warm amber glow. The light had told its story, and today, that story had a happy ending.

The amber represented healthy metabolic activity—the "glow" of life functioning as it should. The violet, however, was the signature of a cellular metabolic shift, a warning sign that something had gone wrong at a molecular level long before it was visible to a microscope. lauramarcuweb_0738.jpg