| http://www.w3.org/ns/prov#value | - The method of claim 3, wherein said conjugate his the general formula (SEQ. ID NO. 1) pyroGlu-His-Trp-Ser-Tyr-X-Leu-Arg-Pro-Z | Y | N wherein X is an amino acid selected from the group consisting of lysine, D-lysine, ornithine, D-omithine, glutamic acid, D-glutamic acid, aspartic acid, D-aspartic acid, cysteine, D-cysteine, tyrosine and D-tyrosine; Y is a li
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