An organic light-emitting diode display including: a display panel; a bezel on which the display panel is mounted; and a buffer disposed between a lower surface of the display panel and the bezel. Arrays of light sources and arrays of light detectors are arranged along respective first and second sides of the display device. The method may be used commercially to recover recombinantly produced proteins from plant hosts thereby making the large scale use of plants as sources for recombinant protein production feasible. By changing the depth to which the threaded adjuster members 220, 222 are threaded, an angular orientation of the mount 202 with respect to the rearward barrel 206 is changed to correct the inclination in the CCD sensor. Various jumper terminals and connecting wires provide for programming of the system to accommodate a variety of applications.