| http://www.w3.org/ns/prov#value | - The polymers may include base subunits containing a sugar moiety or a substitute for ribose or deoxyribose (for example,2??? halide- or methoxy-substituted pentose sugars), and may be linked by linkages other than phosphodiester bonds, such as phosphorothioate, methylphosphonate, and peptide linkages.
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