A container or pan for producing predetermined food portions is disclosed. The fetal cell-maternal antibody complexes are identified and isolated using labelled agents that bind to the maternal antibodies. The absorber removing clad light in a unformed fashion includes a host material impregnated with diffusers. As a result, a dimension in the height of the tie rod supporting part extending from the knuckle can be reduced and the knuckle can be miniaturized and lightened. Cutting the ceramic substrate along the spaces between the photoelectric dies forms a plurality of independent package units. The metal compound is selected from the group consisting of manganese oxide, iron oxide, cerium oxide, tin oxide, and mixtures thereof.