Fig. 5From: Metabolic responses of plasma to extreme environments in overwintering Tibetan frogs Nanorana parkeri: a metabolome integrated analysisPrimary metabolite changes in plasma between the two seasons. a Carbohydrate metabolism, b amino acid metabolism, c fatty acid metabolism. Red color indicates up-regulated metabolites, green indicates down-regulated metabolites, and blue indicates no significant change in metabolite levelsBack to article page