The subject invention pertains to materials and methods for preparing multi-potential stem cells having a pre-selected expression of MHC antigens. The liquid crystal display device includes a pixel electrode and a counter electrode in each pixel region on a liquid-crystal-side surface of one substrate out of respective substrates which are arranged to face each other with liquid crystal therebetween. A query of a remote information processing system is issued for retrieving a plurality of identifier ranges. A metal layer region in contact with the silicide layer has a thickness of 25 nm to 400 nm. A cam mounted to the worm gear engages the lever of a latch.