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(a) Scatter plot demonstrating a positive correlation between the loss of CpT (ApG) dinucleotides and the gain of CpG dinucleotides (Y-axis) among viruses infecting invertebrate hosts. (b) Scatter plot demonstrating a lack of correlation between the loss of CpT (ApG) dinucleotides and the gain of CpG dinucleotides (Y-axis) among viruses infecting vertebrate hosts.
