| http://www.w3.org/ns/prov#value | - Suitable anionic- and cationic-containing moieties which may be bonded or linked to the amino or other terminal groups include, by way of example, the following groups (in which n is zero or a positive integer, more particularly n is zero or an integer of from 1 to 20): In addition to the above, various neuraminic or sialic acid-containing moieties or modified neuraminic or sialic acid-containing
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