An afocal monolithic optical element formed of a shallow cylinder of optical material with fast aspheric surfaces, nominally confocal paraboloids, configured on the front and back surfaces. The card has an inclined surface at a middle of a side surface thereof in a width direction thereof. A nucleic acid having a base sequence encoding the placental organic anion transporter OAT4 or a base sequence hybridizable therewith under stringent conditions. A phase error circuit determines phase errors of the observed transitions. At the same time, a new retrieval is performed for images photographed in the regions corresponding to each of the modified cells.