Figure 3. Phylogenetic analysis of P gene fragments from Caspian seals and representative members of the genus Morbillivirus. Sequences of samples from Caspian seals were generated in this study. Other sequences were obtained from GenBank. RPV, rinderpest virus strain RBOK (#X68311); MV, measles virus vaccine strain Edmonston (#M89920); DMV, dolphin morbillivirus (#Z47758); PMV, porpoise morbillivirus strain 53; phocine distemper virus, PDV (#X75960); and canine distemper virus, CDV strain Bussell (#Z54156). Seal numbers refer to P gene fragments from Caspian seals with identification numbers corresponding to those in the Table. A maximum likelihood tree was generated on P gene nucleotide sequences by means of the DNAML program of the Phylip 3.75 software package with 100 bootstraps and three jumbles.