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Fig. 3 | Zoological Letters

Fig. 3

From: The digestive tract as an essential organ for water acquisition in marine teleosts: lessons from euryhaline eels

Fig. 3

Major transporters responsible for Na+ and Cl absorption (blue rectangles) and water absorption (red rectangle) in the intestinal epithelia of SW eels. K+ extrusion at the mucosal side and Cl extrusion at the serosal side (black rectangles) produce the serosa-negative potential difference typical of the marine teleost intestine. For the molecular identities of NHE and AE, see Fig. 6. The local increase in osmolality in the lateral interspace (LIS) produced by NKA stimulates water flux into the space through the AQP and tight junction (TJ). The flows of ions and water within the cell are shown by arrows. The text size for the transporters indicates the relative abundance and upregulation of the transporters in SW. For details, see 4.1.1. For abbreviation definitions, see the list

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