A macerating apparatus for a toilet in which the problem of jamming the macerator at startup is solved by rapidly detecting the flushing of the toilet and accelerating the macerator before motion-jamming solid objects in the effluent from the toilet can reach the macerator. Sequential scanning is performed on pixels in a picked-up image represented by binarized data Din. Such fragments can induce a polyclonal mixture of antibodies that specifically bind to soluble A-beta without binding to plaques.