There is provided an enzymatic detergent composition comprising a surfactant, a cofactor-dependent oxidoreductase and an antibody or antibody fragment which is directed at one or more surface amino acid residues of said oxidoreductase, characterised in that the molar ratio between said antibody or antibody fragment and said oxidoreductase is less than 1. Also, a method of using a hysteroscope having a single operating channel. Among the new 1,2-dioxetanes are electron deficient group-containing dioxetanes and tethered bis-1,2-dioxetanes. The memory unit stores a pre-processed data file. Methods can be used for both humans and animals and involve the administration of compositions containing selegiline andor desmethylselegiline. An electrode assembly can include a reservoir cap, a reservoir bottom configured to fit to the reservoir cap and define a reservoir therewith, an electrode disposed within the reservoir, and a wicking element in electrical communication with the electrode and configured to absorb a fluid, wherein at least a portion the wicking element is configured to protrude from the reservoir bottom.