The sense of water in the blowfly Protophormia terraenovae

▶ The “water” cell couples taste and osmolarity. ▶ The “water” cell transduction mechanism involves a calcium conductance. ▶ The “water” cell membrane houses an aquaglyceroporin. ▶ The “sense” of water in blowflies is not separate from salt sensitivity. ▶ A new role to aquaglyceroporins in spiking cell excitability.