C07K 9/005

Peptides having up to 20 amino acids, containing saccharide radicals and having a fully defined sequence; Derivatives thereof {the peptide sequence having less than 12 amino acids and not being part of a ring structure containing within the molecule the substructure with m, n > 0 and m+n > 0, A, B, D, E being heteroatoms; X being a bond or a chain, e.g. muramylpeptides}