A cleaning member, specifically a pad or cloth which is preferably saturated with a wet cleansing solution and is retained within a sealed enclosure and attached to, embedded in or in some way captured by a food holding means to facilitate cleansing during and after consuming of said food. The compensating circuit comprises a first capacitor, a second capacitor, and a first switch. The short interfering RNAs are generated by an RNase III-like processing reaction from long dsRNA. The first cooling manifold is further configured to receive a fluid that flows therethrough to conduct heat energy from the first cooling manifold into the fluid. Accordingly, decreases in resolution of images detected by the solid state detector can be prevented. An intercalative, redox-active moiety is adhered andor crosslinked to immobilized DNA duplexes at different separations from an electrode and probed electrochemically in the presence or absence of a non-intercalative, redox-active moiety.