The present invention provides new methods and uses of peptides in effecting a reduction in mammary cell number. Each hinge bracket has an inverted U-shaped cam track therein for receiving the hinge cam pins on the tailgate. The conductive pattern has a larger line width at a first stage conductive pattern portion defined in a portion from an input terminal to m output terminals than the line widths of the conductive pattern portions defined in the remaining portion, the m output terminals being disposed closer to the input terminal of the output terminals of the n portions. A firing mechanism includes a trigger to actuate the firing mechanism from a recovered position to a fired position. In a receiving terminal, based on two pieces of CMID information and attribute information of viewers, one CM material is automatically or manually selected.