Peptide fractions which induce antibodies protecting against the bovine leukemia virus, a process for obtaining such fractions, their coding sequences and vaccines made from such fractions

摘要

A peptide fraction inducing the formation of antibodies which protect against the bovine leukemia virus (BLV), wherein it includes a peptide sequence which reproduces all or part of the sequence of the glycoprotein envelope gp51 fragment of the BLV virus which bears at least one of the epitopes (F, G, H) responsible for the biological activity of the virus. This fraction may be the fragment itself or a synthetic peptide. Application is made to the preparation or search for antibodies, to diagnosis and to the preparation of vaccines.