Root-to-top divergence analysis of Jeju LOM strains and commercial LOM vaccine strains. Complete genomes of 29 strains (8 commercial LOM vaccines and 21 Jeju LOM strains) were analyzed using the TempEst v1.5.1 program. The commercial LOM vaccine strains are marked with a black rectangle and the Jeju LOM strains are marked with a red rectangle. The heuristic residual mean squared method used to analyze all strains revealed the following: slope (rate), 3.93 × 10−5; X-intercept (TMRCA), 1797.24; correlation coefficient, 0.1272; R squared value, 1.6173 × 10−2; and residual mean squared value, 6.9076 × 10−6.