Fig. 2.

Phylogenetic analyses of four RSV genomic RNAs conducted in MEGA5

(a) RNA1; (b) RNA2; (c) RNA3; (d) RNA4. Neighbor-Joining (NJ) method was used to infer the evolutionary history. The bootstrap consensus tree inferred from 1 000 replicates was taken to represent the evolutionary history of the taxa analyzed (Felsenstein, 1985). The number next to the branches represented the percentages of replicate trees, in which the associated taxa clustered together in the bootstrap test (1 000 replicates). The branch lengths were drawn corresponding to the evolutionary distances, which were computed using the maximum composite likelihood method