Methods and apparatus for forming an opening in a shell of an avian egg such that the potential for cracking is greatly reduced are provided and comprise moving a punch through an egg shell at speeds equal to or greater than thirty inches per second. The present invention is equipped with a keyboard unit 2 detachable to a system unit 5. Also cell lines capable of producing monoclonal antibodies are part of the invention. The preferred embodiments provide the capability of a customer accessing historical performance data in exchange for the customer transmitting the performance data to the vendor. The secondary balancer system is formed by supporting balancer weights on a pair of balancer shafts rotating in directions opposite to each other, and by displacing the phases of these balancer weights the direction of the excitation force generated can be inclined so as to coincide with the direction of secondary vibration of the engine. The structure can prevent the problem of corner image sticking in a frame of the liquid crystal display device.