PROBLEM TO BE SOLVED: To provide a novel polypeptide derived from bovine leukemia virus (BLV), serving as CD8-positive T cell epitope.SOLUTION: The present invention relates to a polypeptide comprising continuous predetermined amino acids in an amino acid sequence representing a specific sequence, a polypeptide comprising continuous predetermined amino acids in an amino acid sequence representing another specific sequence, or a polypeptide comprising continuous predetermined amino acids in an amino acid sequence representing still another specific sequence.【課題】ＣＤ８陽性Ｔ細胞エピトープとなる、牛白血病ウイルス（ＢＬＶ）由来の新規なポリペプチド等の提供。【解決手段】特定の配列を示すアミノ酸配列における連続する所定のアミノ酸を含むポリペプチド、別の特定の配列を示すアミノ酸配列における連続する所定のアミノ酸を含むポリペプチド、また別の特定の配列を示すアミノ酸配列における連続する所定のアミノ酸を含むポリペプチド。【選択図】なし
