| http://www.w3.org/ns/prov#value | - Yet another embodiment of the present invention is a method for identifying the presence of a luminescent nucleic acid tag on an item comprising: (a) irradiating said item with photons of a first wavelength; (b) scanning for emission of photons of a second wavelength from said item; and (c) determining the presence of said luminescent nucleic acid tag on said item by detecting said photons of a se
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