A cartridge is provided to present a biological sample for analysis by an imaging instrument. The cartridge of the invention utilizes a series of channels, capillaries, reservoirs and stop junctions to precisely move a sample, reagent and diluent through the cartridge as a function of the sum of capillary,...http://www.google.com.au/patents/US5627041?utm_source=gb-gplus-sharePatent US5627041 - Disposable cartridge for an assay of a biological sample
