FIELD: organic chemistry, peptides, oncology. SUBSTANCE: invention describes new antigenic peptides from particles secreted by tumors and showing an amino acid sequence as a component of the protein (size is 100 kDa) composed of the indicated particles and showing one of the following sequence: a) Arg-Thr-Asn-Lys-Glu-Ala-Ser-Ile and b) Asn-Gln-Arg-Asn-Arg-Asp. Invention describes a method of detection of particles secreted by tumors also. EFFECT: improved method of detection of peptides. 6 cl, 1 tbl, 4 ex
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