A medical cart includes a cart body, a top platform, and an elevating device. The device includes a cell culture membrane and a flow pathway for moving fluid across cells growing on the membrane to apply shear stress on the cells. A kinematic system connected between a rear cover and the frame is movable between an extended position in which the cover is in an opened position raised above the trunk and the frame is in a raised position, and a retracted position in which the cover is in a closed position covering the trunk and the frame is in its lowered position.