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(a) The optical illusion, Rubin’s Vase, shown here as a gray-scale image consists of two reversing figures of a face and a vase. (b–c) Fluorescent images of the two reversing figures obtained by tuning to two distinct PC resonances. The two figures were printed with a Cy5 labeled oligonucleotide and a Cy5 labeled protein, respectively and each figure produced a separate shift in the PC resonance.
