Apparatus and methods are provided for the delivery of molecules to a site via a carrier fluid. The apparatus include microchip devices which have reservoirs containing the molecules for release. The apparatus and methods provide for active or passive controlled release of the molecules. Embodiments...http://www.google.com/patents/US6537256?utm_source=gb-gplus-sharePatent US6537256 - Microfabricated devices for the delivery of molecules into a carrier fluid
