In an optical connector 1, a cord receiving hole portion 11c, where an optical fiber cord 90 can be inserted and received axially of the optical fiber cord, is formed in a housing 10. The centerbody stiffener extends radially inward from a centerbody shell. 0 percent by weight of at least one coupler compound and from 0. The interior of the hollow area has a space to receive the jaws when the handles are folded relative to the jaws. Also disclosed are a method of preparing a chitosan from a fungus, and a method of using a chitosan for treating breast or cervical cancer. Also included in the present invention are processes for producing such thin film coatings.