The present invention relates to a microfluidic system for processing a cell-containing liquid. The system includes a microfabricated substrate having an enrichment channel to prepare an enriched cell sample from the cell-containing liquid. A flow through member is in liquid communication with the enrichment...http://www.google.co.uk/patents/US20020141903?utm_source=gb-gplus-sharePatent US20020141903 - Methods and systems for processing microfluidic samples of particle containing fluids