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Phylogenetic tree based on the VP1 nucleotide sequence (1350 nt in length) of 15 Tunisian CIAV samples and CIAV strains from the GenBank database. New Tunisian CIAV sequences were marked with a black circle. Del-Ros vaccine strain was marked with a black square. Only bootstrap values ≥ 70 were reported. The tree was drawn to scale, with branch lengths in the same units as the evolutionary distances used to infer the phylogenetic tree.
