Black gesso and others used. Washi paper is not used. Painted directly on panel. Ouroboros is one of the ancient symbols of the snake or dragon that bites its own tail and becomes a ring. In Jungian psychology, it appears as a "prototype. It is regarded as a symbol of the unity of beginning and end, perfection, eternity, and immortality. In this work, the staff of Asklepios, a symbol of medicine and medical art, is placed in the center of the circle.