1. A peptide derived from human lactoferrin, for use as an agent for masking the antigen preparation with a pharmaceutical composition for delivering a biologically active substance to a mammal, wherein the biologically active agent is capable of inducing an undesired immune response in mammals, wherein the pharmaceutical composition comprises supramolecular assembly a biologically active substance and a peptide derived from human lactoferrin, with the effect that after a Pharmaceutical Delivery oh composition to a mammal, it does not occur or occurs only reduced the induction of unwanted immune response against biologically active veschestva.2. A peptide derived from human lactoferrin of claim 1, wherein the peptide has an amino acid sequence according to SEQ. ID. No. KCFQWQRNMRKVRGPPVSCIKR 1 or a sequence which is at least 90% homologous to this posledovatelnosti.3. A peptide derived from human lactoferrin of claim 2, wherein the sequence of at least 90% sequence homology with SEQ: ID1, and wherein cysteine residues present at positions 2 and 19.4. A peptide derived from human lactoferrin of claim 1, wherein the unwanted immune response is an IgG immune otvet.5. A peptide derived from human lactoferrin of claim 1, wherein the unwanted immune response is an immune otvet.6 IgE. A peptide derived from human lactoferrin of claim 1, wherein the biologically active substance which is capable of inducing an undesired immune response in a mammal selected from the group of biologically act1. Пептид, полученный из человеческого лактоферрина, для применения в качестве агента, маскирующего антиген, при получении фармацевтической композиции для доставки биологически активного вещества в организм млекопитающих, где биологически активное вещество способно индуцировать нежелательный иммунный ответ в организме млекопитающих, где фармацевтическая композиция содержит надмолекулярный агрегат биологически активного вещества и пептида, полученного из человеческого лактоферрина, с тем
