In a fuel pump, four permanent magnets are installed in a housing. From partial storage areas constituting the storage area subjected to the division, a partial storage area no smaller than a predetermined size is selected as a partial storage area subjected to the division, according to a comparison result by a size comparison unit. A model may then be adjusted to fit with in the isolated human target in the received depth image. Various inhibitors of protein AGE glycation have been identified, using this assay.