Fig. 1From: Betaine addition to the diet alleviates intestinal injury in growing rabbits during the summer heat through the AAT/mTOR pathwayEffects of betaine on intestinal immune function of growing rabbits under the summer heat. A Duodenum; B Jejunum; C Ileum. TNF-α Tumor necrosis factor-alpha, IL-2 Interleukin-2, IL-4 Interleukin-4. a–c Different superscript lowercase letters indicate significant differences (P < 0.05). P1, linear; P2, quadraticBack to article page