The present invention provides a viral vector that ensures highly efficient gene transfer into renal cells and its use. The system includes a fluid processing region in which a plasma-containing fluid is separated into plasma and other fluid components. A video search module of the recommendation service is configured to search for a number of video candidates, each of which is semantically similar to the probe video and has an associated soundtrack. The main body includes a second main plate and two second side parts symmetrically placed on two opposite sides of the second main plate.