A method for compensating for multipath effects when receiving a vestigial sideband modulated TV signal, one portion of the spectrum of the undistorted TV signal being symmetrical with respect to a video carrier frequency, and deviations from the symmetry of the relevant portion of the spectrum that exists in the undistorted state being analyzed in order to suppress the multipath effects. The first mode is a mode that decides priority of the packet by at least one of the address information and the application information, the second mode is a mode that decides priority of the packet by the DS value, the third mode is a mode that decides rewrite the DS value by at least one of the address information and the application information. Rotating the drive rod extends or retracts the pantograph linkage set. The present invention further discloses a method for somatic gene therapy, which can be used for various therapeutic applications and involves introducing a gene of interest contained within the retroviral genome into human repopulating stem cells followed by introducing these cells into a human host.