| http://www.w3.org/ns/prov#value | - Referring to FIGS. 3-8, and FIG. 3( a), the substrate 10 of the optical identification element (or microbead) 8 may be functionalized by coating or attaching a desired probe 76, such as a compound, chemical or molecule, which is then used in an assay as an attractant for certain complimentary compounds, chemicals or molecules, otherwise known as a ???target??? analyte 52-54 (see FIG. 6).
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