A method for inhibiting the activation of macrophages, inhibiting the formation of osteoclasts, inhibiting the function of osteoclasts, andor activating osteoblasts in a mammal is provided. In the present invention, the gray values of R, G, and B components of one color image are separately counted during processing the image. The control circuit is designed to cancel or remove electric noises arising from an on-off operation of the heater added to a sensor output. The lower plate of this embodiment includes a post extending upwardly from the inner surface of the plate, the post including a ball-shaped head.