(a) CCR9 expression in the small intestine (SI) and colon of Gallus gallus and Lonchura striata. (b) CCR9 expression in the small intestine (SI) and colon of Chrysemys picta bellii and Pelodiscus sinensis. (c) CCR9 expression in the small intestine (SI) and colon of Rana catesbiana Shaw and Rana nigromaculata. (d) GPR15 expression in the small intestine (SI) and colon of Gallus gallus and Lonchura striata. (e) GPR15 expression in the small intestine (SI) and colon of Chrysemys picta bellii and Pelodiscus sinensis. (f) C10ORF99 expression in the small intestine (SI) and colon of Gallus gallus and Lonchura striata. (g) C10ORF99 expression in the small intestine (SI) and colon of Chrysemys picta bellii and Pelodiscus sinensis. (h) GPR15 and C10ORF99 expression in the small intestine (SI) and colon of Rana catesbeiana Shaw and Rana nigromaculata. Data information: All data shown are representative of at least three independent technical replicates. Error bars indicate SD (n=3). UD, undetermined, ***P-value < 0.001; **P-value < 0.01; NS: no significance (t-test). 