| http://www.w3.org/ns/prov#value | - branched or unbranched alkyl; Za is chlorine, bromine or iodine; --E-- is O, NH or an acyclic divalent sulfur atom; m is an integer from 1 to the total number of modified reactive groups on said oligo- or polynucleotide; andwhich compound has at least one couplable reactive site thereon which is attached to an entity capable of generating a signal. 2.
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