Volume 5 reviews recent advances in membrane transport, physiology, emphasizing transport mechanisms that have been foci for intensive investigation over the past 5 years. From this work, it has become abundantly clear that these same transport mechanisms are found in many different types of cells and tissues, but that they can be arranged in various combinations with other transporters in order to provide a givencell with unique transport characteristics. Similarly, distribution of thesemembrane transporters between apical and basolateral membranes in epithelia in various combinations with...