The present application is directed to transverse connectors that connect first and second vertebral rods that extend along the spine. Each night, a test head performs a series of tests on each of the terminating lines. A second antenna array of antenna coils generates a second wireless field. The cover member is fixedly secured to the hollow ink tank body and sealing the accommodating chamber of said hollow ink tank body. Also described is a chromatographic separation method for separating a component of interest from a fluid utilizing the chromatographic separation member. Barrier device can be located in the walkway but not connected to the first or second opening.