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Alterations in clustering of enteroviruses and rhinoviruses in the 5′-terminal region of the genome. Trees correspond to nt 601 to 900 (A), 901 to 1200 (B), and 2400 to 2800 (C) of the alignment. Viruses interacting with poliovirus receptor are marked with shaded circles, and those recognizing intercellular adhesion molecule 1 are marked with open circles (C). Bars indicate 10% divergence.
