An object of the present invention is to efficiently inject a drug. The method of the present invention includes providing a semiconductor substrate and forming one or more depressions in the semiconductor substrate using laser machining processes. Videos and voices on a program section involving a keyword that meets predetermined conditions selected from the keywords stored in the received program keyword list are reproduced. Repeating the procedure allows the sequence of the complement to be identified, and thereby the target sequence. A method for operating the dryer and a method for controlling the temperature andor the humidity of the air of a room using the dryer are also provided. Embodiments of the invention include the production of an attenuated bacterium from the family Enterobacteriaceae with a non-functional lipoprotein for use as a vaccine or as a vaccine vector for delivering antigens to a subject to be vaccinated.