Fig. 8From: Glutamate promotes nucleotide synthesis in the gut and improves availability of soybean meal feed in rainbow troutEffects of Glu intake on microvilli thickness in the proximal intestine. The thickness of microvillus of proximal intestine. The fish were fasted for the last 48 h of the experiment. All values are expressed as the mean ± SEM (n = 8). Different letters indicate significant difference between groups (p < 0.05)Back to article page