| http://www.w3.org/ns/prov#value | - [0240] These same intermediate compounds can be used to form ETM or metallocene polymers, which are added to the nucleic acids, rather than as backbone replacements, as is more fully described below. [0241] In a preferred embodiment, particularly for us in mechanism-2 systems, the ETMs are attached as polymers, for example as metallocene polymers, in a ???branched??? configuration similar to the ?
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