Method and apparatus for analyzing blood or other biological fluids containing cells or particles of interest by passing them sequentially through a narrow flow chamber where a repetitive physical stimulus, such as a plurality of beams of light, is spaced at intervals to form a code along the length...http://www.google.es/patents/US3941479?utm_source=gb-gplus-sharePatente US3941479 - Use of modulated stimulus to improve detection sensitivity for signals from particles in a flow chamber
Use of modulated stimulus to improve detection sensitivity for signals from ...
