A process is provided for producing a radiation sensitive composition for color filters. The method requires obtaining a polynucleotide from a cellular homogenate, wherein the polynucleotide encodes the polypeptide and determining the sequence of the polynucleotide and its expression level. A control unit identifies a correspondence between the activity-detection signal, and the signal that is generated by the sensor. 6 is satisfied, where \u201ca\u201d represents a first minimal distance between the front end portion of the center electrode and the front end portion of the ground electrode and, where \u201cb\u201d represents a second minimal distance between the front end portion of a ceramic insulator and the front end portion of the ground electrode. The system generates indicators indicative of color classes of pixels in the visual representation.