A photoreactive resin composition having high sensitivity and causing less gelation, and methods of manufacturing a circuit board and a ceramic multilayer substrate having a high-resolution wiring pattern and via holes by a photolithography process using the photoreactive resin composition are described. The pressure in the liquid exerts a force on the object so as to actuate the object. According to the invention, a fastening element is provided which fixes the cylinder head to the cylinder housing using contact pressure that is applied in the area of the axis of the piston bore. Additionally, the invention can enable the expeditious provision of updated andor tailored content over a network from a content provider site to a content display site so that the content provider’s current and appropriately tailored content is always displayed at the content display site. Suitable therapeutic agents include, for example, agents that up-regulate the expression IGF-II or guanine deaminase in a cell. The new or refurbished vessel may or may not be of the same size or configuration as the used vessel.