A memory cell includes a MOS transistor having a source region, a drain region and a gate electrode, a ferroelectric film formed on the source region of the MOS transistor via an insulating film and an electrode formed on the ferroelectric film. The herbal compositions can include the extracts of up to 14 plants, including the root of abyssinica and Clutia robusta. The second lumen includes a second opening extending obliquely away from the sidewall distally toward the first distal opening and a second guide wire opening disposed proximally of the second opening and in a plane generally parallel to the sidewall. Each of the transmission lines 4 is formed of a strip line, a mictostrip line, a coplanar line or the like, and has low-loss when connected to a circuit board. The second circuit branch functions as an error amplifier providing an error signal to facilitate voltage regulation.