| http://www.w3.org/ns/prov#value | - An output signal indicative of the code is provided on a line 1031.Referring to FIGS. 14-19, and FIG. 14(a), the substrate 1010 of the optical identification element (or microbead) 1008 may be functionalized by coating or attaching a desired probe 1076, such as a compound, chemical or molecule, which is then used in an assay as an attractant for certain complimentary compounds, chemicals or molecu
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