Figure 1From: Identification, characterization and comparative genomics of chimpanzee endogenous retrovirusesUnrooted RT based neighbor joining tree of three classes of chimpanzee endogenous retroviruses: class I, CERV1 to CERV29; class II, CERV30 to CERV 39; class III, CERV 40 to CERV 42. Bootstrap values are shown for each of the families. RT sequences from species other than chimpanzee, listed in Table 1, are included for comparison.Back to article page