. "Reviewed: Beitz, E, 2010-06-24"^^ . "Reviewed: Mathai, JC, MacIver, B, 2010-07-31"^^ . "Reviewed: Calamita, G, 2010-07-15"^^ . "Aquaporin-0 (AQP0, also known as MIP), AQP1, AQP2, AQP3, AQP4, AQP5, AQP7, AQP8, AQP9, and AQP10 are 6-pass transmembrane proteins that passively transport water across the plasma membrane according to the concentration gradient. Each molecule contains a water channel and subunits assemble into homotetramers. In principle water can move in either direction through an aquaporin, however in vivo flow may occur in only one direction. Conductance of water by AQP0 is very low relative to other aquaporins."^^ . "Edited: May, B, 2010-02-09"^^ . "Authored: May, B, 2010-02-09"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Passive Transport of Water out of Cells by Aquaporins"^^ . . .