There is disclosed herein subunits and multimers of subunits suitable for use in inducing the transport of one or more cargo substances into a cell and in some instances across a cell. The methods and systems use data mart and on-line analytical processing technology to provide users with summary and detailed information without requiring the user to have specific programming skills. Another embodiment includes a hollow braided length having a first inner section and a second inner section, the sections formed by radially inserting the ends into the hollow braid and passing it along a portion of the hollow interior. The changeover switch switches over between a traveling mode, in which traveling operation is possible by the operating levers, and a work mode, in which implement operation is possible by the operating levers. The sand pocket will slip over the back of a chair to allow the inflatable pillow to serve as a headrest. The hydrophilic region is composed of a component-disposing region and a liquid-capturing region formed on the periphery of the component-disposing region.