An illuminated electric part includes a manipulating shaft which is rotatable and is stable at least at two points. Also provided is an automated cell image method for analyzing a biological specimen that has consecutively been stained by either an in situ hybridization method, or an immunohistochemistry method or a nucleic acid stain, and counterstained. The connecting member has an elastic connecting portion defining a restricting hole. Also, the phase offset of the quadrature output signals can be tuned and calibrated using a phase shifting circuit. A digging tooth having a convergently tapering socket locates on said adaptor nose with a screw-threaded connector extending, in a direction parallel to a longitudinal axis of said tooth, between a connector abutment on the adaptor nose and a tooth coupling on the tooth. Compounds employed according to the present disclosure exhibit good anti-angiogenic activity as well as demonstrate a prophylactic effect for preventing and substantially reducing angiogenesis.