Figure 2

Histological features of adult zebrafish intestine along the seven anterior-posterior segments. (A-G) Representative cross sections of intestine from segments S1-S7 respectively. All sections were stained by Hematoxylin/Eosin/alcian blue. Segments S1-S6 contain three tissue layers: mucosa, muscularis externa and serosa, while S7 has a simple epithelium directly adjacent to the muscularis externa. Goblet cells (stained blue) are interspersed among the absorptive cells. Examples of enterocytes (e) and goblet cells (g) are indicated in Panels (A) and (G). Scale bars: 50 μ m.