A method of fabricating a vertical transistor in a semiconductor device improves integration of the semiconductor device according to a design rule. Pollen particles are filtered through a filter device and the particles of less than 50 \u03bcm of diameter are taken out. The method also includes exposure of the exterior of the lumen to peroxide vapor to sterilize the exterior of the lumen. The second magnet is an electromagnet, and the first magnet is a permanent magnet. The verified strongest transmit antenna signal is reproduced as an interference signal.