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Visual comparisons of sequences from two ribosomal subunits and three domains of life. There is one row for each domain, where we show left to right LSU totals and stems; LSU loops, bulges, and junctions; SSU totals and stems; SSU loops, bulges, and junctions (colors are defined in Fig. 1 ▶). (Top to bottom) The rows show archaea, bacteria, and eukaryotes. The similarities are striking, considering the long time of evolutionary divergence between the different domains.
