The invention relates to complexes of human leukocyte antigen molecules and tyrosinase derived peptides SEQ ID NO: 2, on the surfaces of abnormal cells. By tilting each rotation shaft with respect to the horizontal plane, it is possible to prevent the workpieces from being damaged. The elastic allows for the tool to return to the original shape. One of the bidirectional, polarization-dependent, free-space paths couples at least the first waveguide to the second waveguide.