A semiconductor device has a diffusion barrier formed between a doped glass layer and surface structures formed on a substrate. For example, a nail polish cap includes an integral nail file. The case includes a supporter for supporting the fulcrum of the drive member, and first and second contact sections which the first and second stoppers contact non-simultaneously to each other according to a swinging motion of the drive member, respectively. The bidirectional switch circuit switches on and off inputs of respective phases from the three-phase AC power supply to the full-wave rectifier circuit. To allow the shell to be able to be mounted on the device the corners of the hard shell are cut open. The invention also provides methods and pharmaceutical compositions for reducing a host rejection response to a porcine xenograft.