| http://www.w3.org/ns/prov#value | - Various conventional linkers can be used, e.g., diisocyanates, diisothiocyanates, carbodiimides, bis-hydroxysuccinimide esters, maleimide-hydroxysuccinimide esters, glutaraldehyde and the like, such as a selective sequential linker such as the anhydride-isothiocyante linker disclosed in U.S. Pat. No. 4,680,338.
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