Fig. 1From: Comparative metabolomics analysis reveals high-altitude adaptations in a toad-headed viviparous lizard, Phrynocephalus vlangaliiThe specific locations of the two sampling sites for P. vlangalii lizards. The low-altitude group was collected from Dulan County (2960 m) and the high-altitude group was collected from Madoi County (4250 m) on the Qinghai–Tibet PlateauBack to article page