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Caption: An illustration of the molecular machines in several stages of operation. This image relates to a paper that appeared in Jan. 11, 2013, issue of Science, published by AAAS. The paper, by Dr. Bartosz Lewandowski at the University of Manchester in Manchester, UK, and colleagues was titled, "Sequence-Specific Peptide Synthesis by an Artificial Small-Molecule Machine."
Credit: [Image courtesy of Guillaume De Bo]
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