Fig. 3
From: The gut-microbiota-brain axis in autism: what Drosophila models can offer?
Illustration of Drosophila and human anatomical structures. A, B The gastrointestinal system in humans and flies is functionally analogous, shares a similar overall organizational structure, and performs both secretory and absorptive functions. C The intestinal epithelium of both humans and flies consists of differentiated epithelial cells, secretory enterocytes (ECs), and absorptive enteroendocrine (EE) cells. Colors are coded for similar structures. D, E Drosophila and mammalian intestines are composed of similar cell types with minor differences (adapted from https://droso4schools.wordpress.com/organs/ and [96])