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The physical transition from an all-atom model to a precursor of ribbon drawings. The brass model of the Staph nuclease molecule (1SNS; 19) decorated with tygon tubing, filled with fluorescein along the backbone (green) and rhodamine for the thymidine diphosphate inhibitor (red). a) room lights; b) room and UV; c) UV only; d) "worm" drawing by Jane Richardson, based on the image in c.
