Fig. 2From: Genetic variation of Echinococcus spp. in yaks and sheep in the Tibet Autonomous Region of China based on mitochondrial DNAMedian-joining networks of Tibetan population of 83 Echinococcus granulosus (s.s.) isolates (yak, n = 30, sheep, n = 53) a nad1 (894 bp) and b nad5 (680 bp). Circle sizes are proportional to the corresponding haplotype frequencies. Hatch marks represent the number of mutationsBack to article page