The support section (23) with, the spine which extends from the aforementioned support section (22) with it is the needle-shaped body which is possessed. The aforementioned spine consists of the material which includes with the pectin and the alginic acid salt.支持部(23)と、前記支持部から延びた突起部(22)とを具備する針状体である。前記突起部は、ペクチンとアルギン酸塩とを含む材料からなる。