The present invention relates to a human neural stern cell, and to a pharmaceutical composition for the treatment of central or peripheral nervous system disorders and injuries using same. A first dielectric layer is formed over one or more conductive pathways. After verifying that the requesting entity is authorized to control the domain name, information describing user accounts having the domain name is received, and instant messaging services are provided for the user accounts. A receiver filtering circuit between the receiver oscillatingfiltering circuit and a receiver amplifying-shaping circuit improves the operation of the latter. The center of the concave portion is positioned so as to deviate from the central axis at the first side face. Moreover, a switchable two and three dimensional display with the above zoom lens array is also provided.