| http://www.w3.org/ns/prov#value | - Using a molar ratio of about 15:1 for dye to polymer, the external dyes are generally first attached to the polymer, with sufficient reactive attachment sites remaining on the polymer to attach the labeled polymer to the bead, where the bead has been modified to contain reactive functional groups, e.g. amino or carboxylate modified beads, as in Example 5 where about half the reactive sites on the
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