The invention relates to a method for assaying a biological or chemical sample comprising the following steps: illuminating the sample (10) by means of a light beam (17) from a source (11), producing an image including the image of the beam (18) diffused by the sample (10), ...http://www.google.fr/patents/US7396650?utm_source=gb-gplus-shareBrevet US7396650 - Method for dosing a biological or chemical sample
