Fig. 3From: Genetic composition and evolution of the prevalent Mycobacterium tuberculosis lineages 2 and 4 in the Chinese and Zhejiang Province populationsMutation rates and changes in sub-lineage diversity over time. a The mutation rate was estimated using Beast (Bayesian evolutionary analysis by sampling trees, version 1.8.4). b Bayesian skyline plots indicating changes in the diversity of four sub-lineages over time. Shadowed areas show the 95% HPD (high posterior density) intervals for the population-size estimationsBack to article page