EcoRI stands for *Escherichia coli* R strain, with the 'I' denoting it was the first restriction enzyme isolated from that bacterium. As I label these vials in the college lab, however, I always think it stands for 'Economically Restricted, Intensely'—the buffer we prepare is so carefully measured, one extra microlitre feels like a luxury. My own MPSC prep feels like running such a precise, restrictive digest on my future, hoping the fragments will somehow assemble into a stable career.
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